Major optometry device and Major optometry program

Abstract

The subjective optometry device is provided with: a visual target presentation means for presenting an examination visual target to an eye to be examined; a correction means for changing the optical characteristics of the target luminous flux emitted from the target presentation means; and a control means for controlling at least one of the optotype presentation means and the correction means on the basis of an answer input by the subject to automatically perform optometry including a plurality of test items, the subjective optometry device being provided with: a first acquisition means for acquiring an optotype of the subject, and a second acquisition means for acquiring an optotype of the subject; acquiring at least one of front glasses data of glasses worn by the subject, tactical measurement data of the eye of the subject, and pre-dominant measurement data acquired in the past; a second acquisition unit that acquires a correction value at which the eye to be examined is corrected by the correction unit when optometry is performed; a comparison processing unit that performs comparison processing on an allowable value based on the data acquired by the first acquisition unit and the correction value acquired by the second acquisition unit; and an output unit that outputs an alarm based on a comparison result of the comparison processing unit.

Description

Technical Field

[0001] The present disclosure relates to a subjective optometry device and a subjective optometry program for measuring optical characteristics of an eye to be examined in a subjective manner. Background Art

[0002] In the subjective optometry device, a subjective optometry device that measures the optical characteristics of the eye to be examined in a subjective manner is used. For example, the subjective optometry device can measure the optical characteristics of the eye to be examined by arranging an optical component in front of the eye to be examined and presenting a sight mark through the optical component to the eye to be examined. For example, the subjective optometry device is used to perform self-optology in which the subject performs a subjective examination (see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-89255 Summary of the invention

[0006] In self-eye examination using such a subjective eye examination device, there are more and more chances that the examiner is not near the examinee. As a result, it is difficult to confirm whether the eye examination is being performed correctly. Therefore, the examiner needs to confirm the examination results after the examination to determine whether the eye examination was performed correctly. Moreover, depending on the examination results of the examinee's eye, it is sometimes necessary to re-examine from the beginning.

[0007] In view of the above-mentioned problems, the present disclosure aims to provide a subjective optometry device and a subjective optometry program that can smoothly perform optometry.

[0008] The subjective optometry device of the first scheme of the present disclosure comprises: a sight mark presenting unit for presenting an inspection sight mark to an eye to be inspected; a correction unit for changing the optical characteristics of a sight mark light beam emitted from the sight mark presenting unit; and a control unit for controlling at least one of the sight mark presenting unit and the correction unit based on an answer input by the subject, so that optometry including a plurality of inspection items is automatically performed, the subjective optometry device is used to measure the optical characteristics of the eye to be inspected in a subjective manner, and the subjective optometry device is characterized in that it comprises: a first acquisition unit for acquiring front eyeglass data obtained by measuring the optical characteristics of the glasses worn by the subject, and a control unit for acquiring front eyeglass data obtained by measuring the optical characteristics of the glasses worn by the subject, and a control unit for controlling at least one of the sight mark presenting unit and the correction unit based on an answer input by the subject, so that optometry including a plurality of inspection items is automatically performed. a second acquisition unit that acquires, when performing the optometry, a correction value of the eye to be examined that is corrected by the correction unit; a comparison processing unit that compares an allowable value based on at least any one of the front eye data, the heteronosic measurement data, and the front subjective measurement data obtained by the first acquisition unit and the correction value obtained by the second acquisition unit; and an output unit that outputs an alarm based on the comparison result of the comparison processing unit.

[0009] The subjective optometry program of the second scheme of the present invention is used in a subjective optometry device, the subjective optometry device comprising: a sight mark presenting unit, which presents an inspection sight mark to the eye to be inspected; a correction unit, which changes the optical characteristics of the sight mark light beam emitted from the sight mark presenting unit; and a control unit, which controls at least one of the sight mark presenting unit and the correction unit based on an answer input by the subject, so that optometry including a plurality of inspection items is automatically performed, the subjective optometry device is used to measure the optical characteristics of the eye to be inspected in a subjective manner, and the subjective optometry program is characterized in that, by executing the subjective optometry program by a processor of the subjective optometry device, the subjective optometry device executes: a first acquisition step, obtaining the measurement of the optical characteristics of the eye to be inspected At least any one of front eyeglasses data obtained by measuring the optical characteristics of the eye being tested in an external sense, heterognostic measurement data obtained by measuring the optical characteristics of the eye being tested in an external sense, and front subjective measurement data obtained in the past by measuring the optical characteristics of the eye being tested in a subjective sense; a second acquisition step of obtaining a correction value of the eye being tested corrected by the correction unit when performing the optometry; a comparison processing step of comparing an allowable value based on at least any one of the front eyeglasses data, the heterognostic measurement data and the front subjective measurement data obtained in the first acquisition step with the correction value obtained in the second acquisition step; and an output step of outputting an alarm based on the comparison result of the comparison processing step. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1A This is an external view of a state in which the eye refractive power measurement unit is supported in a standby position.

[0011] Figure 1B This is an external view of a state in which the eye refractive power measurement unit is supported at the measurement position.

[0012] Figure 2A This is a schematic diagram showing the optical arrangement of the light projection optical system during the remote inspection.

[0013] Figure 2B This is a schematic diagram showing the optical arrangement of the light projection optical system during close-up inspection.

[0014] Figure 3 This is a schematic diagram of an eye refractive power measurement unit.

[0015] Figure 4 This is a schematic diagram of a control system of a subjective optometry device.

[0016] Figure 5 This is an example of a self-eye examination assistance screen.

[0017] Figure 6 This is an example of a self-eye examination assistance screen.

[0018] Figure 7 1 is a diagram for explaining the correspondence between the cylindrical correction amount and the allowable value of the astigmatism axis correction amount. DETAILED DESCRIPTION

[0019] <Summary>

[0020] An embodiment of the subjective optometry device of the present embodiment will be described. The following items classified by <> can be used independently or in association with each other.

[0021] The subjective optometry device of this embodiment is a device for measuring the optical characteristics of the eye to be examined in a subjective manner. For example, the optical characteristics of the eye to be examined may be eye refractive power (as an example, at least one of spherical refractive power, cylindrical refractive power, astigmatism axis angle, etc.), binocular vision function (as an example, at least one of prism amount, stereoscopic vision function, etc.), contrast sensitivity, etc.

[0022] <Visual symbol presentation unit>

[0023] The subjective optometry device of this embodiment may include an optotype presenting unit. The optotype presenting unit presents an inspection optotype to the inspected eye. For example, the optotype presenting unit may present an inspection optotype to the inspected eye by emitting an optotype light beam toward the inspected eye.

[0024] For example, the sight mark presenting unit may be a display (eg, display 31). Also, for example, the sight mark presenting unit may be a light source and a DMD (Digital Micromirror Device). Also, for example, the sight mark presenting unit may be a light source and a sight mark board.

[0025] For example, the sight mark light beam from the sight mark presenting unit can be directly guided toward the eye to be inspected. In addition, for example, the sight mark light beam from the sight mark presenting unit can be guided toward the eye to be inspected via a light projection optical system (e.g., light projection optical system 30). For example, the light projection optical system can have at least one optical component for the sight mark light beam emitted from the sight mark presenting unit to pass through. As an example, it can have at least any one of a lens, a reflector, etc.

[0026] <Correction Unit>

[0027] The subjective optometry device of this embodiment may include a correction unit. The correction unit changes the optical characteristics of the sight mark light beam emitted from the sight mark presenting unit. For example, the correction unit may be arranged in the optical path of the light projection optical system to change the optical characteristics of the sight mark light beam.

[0028] For example, the correction unit may be any structure that can change the optical characteristics of the sight mark beam.

[0029] For example, the correction unit may include an optical element. For example, the optical element may be at least one of a spherical lens, a cylindrical lens, a variable focus lens, a cross cylindrical lens, a rotating prism, a wavefront modulation element, etc. Of course, the optical element may also be different from them. In this case, the optical characteristics of the sight mark beam are changed by controlling the optical element.

[0030] In addition, for example, the correction unit may have a structure for optically changing the presentation position (presentation distance) of the sight mark relative to the eye to be examined. As an example, it may have a structure for moving the sight mark presentation unit in the optical axis direction, or it may have a structure for moving an optical element (e.g., a spherical lens, etc.) in the optical path in the optical axis direction. In this case, the optical characteristics of the sight mark beam are changed by controlling a driving unit for controlling at least one of the sight mark presentation unit and the optical element.

[0031] In addition, for example, the correction unit may be an eye refractive power measuring unit (e.g., eye refractive power measuring unit 40) that switches and arranges an optical element (e.g., optical element 52) ​​in front of the eye to be inspected via an inspection window (e.g., inspection window 43). For example, the eye refractive power measuring unit may have a lens disk (e.g., lens disk 50) in which a plurality of optical elements are arranged on the same circumference. In this case, the optical characteristics of the sight mark beam are changed by controlling a driving unit (e.g., driving unit 51, driving unit 53, etc.) for controlling the lens disk.

[0032] <Control Unit>

[0033] The subjective optometry device of this embodiment may include a control unit (e.g., control unit 60). The control unit controls at least one of the sight mark presenting unit and the correction unit based on the answer input by the subject, so that optometry including multiple examination items is automatically performed. For example, the control unit may execute a self-optology program based on an operation signal input by the subject through the operation of the answer input unit, so that optometry including multiple examination items is automatically performed.

[0034] For example, the answer input unit may be a unit for the subject to input the answer. As an example, the answer input unit may be an operation unit such as a lever switch or a push button switch (for example, the subject controller 20).

[0035] For example, the self-optometric program may include a self-optometric application program. The self-optometric application program may be a program for realizing an application program (self-optometric application program) for automatically performing optometry based on an answer input by the subject.

[0036] For example, the control unit can control the sight mark presenting unit. As an example, the display of the sight mark presenting unit can be controlled to change at least one of the type of sight mark, the visual acuity value of the sight mark, etc. In addition, for example, the control unit can control the correction unit. As an example, the movement of at least one of the sight mark presenting unit or the optical element in the correction unit, the configuration of the optical element, etc. can be changed. Of course, for example, the control unit can also combine such controls in the sight mark presenting unit and the correction unit.

[0037] For example, the control unit can control the execution of multiple inspection items in the optometry of the self-optometry program based on the comparison result of the comparison processing unit described later. For example, the control unit can omit a specified inspection item from among the multiple inspection items in the optometry based on the comparison result of the comparison processing unit, and perform the next inspection item. In other words, for example, the control unit can interrupt the execution of the specified inspection item in the inspection of the eye to be inspected based on the comparison result of the comparison processing unit, and automatically transfer the inspection item in a manner of skipping the acquisition of the inspection result in the specified inspection item and performing the next inspection item. For example, in this case, the possibility that a reliable inspection result cannot be obtained in the specified inspection item of the eye to be inspected and the inspection continues for a long time is reduced, and the optometry can be carried out smoothly to the end.

[0038] In addition, for example, the control unit may not execute a specified inspection item among a plurality of inspection items in the optometry based on the comparison result of the comparison processing unit, and force the optometry to end. In other words, for example, the control unit may cancel the execution of the specified inspection items in the inspection of the eye to be inspected and the execution of the inspection items planned after the specified inspection items based on the comparison result of the comparison processing unit, and automatically end the optometry. For example, in the case where a low-reliability inspection result is obtained in the specified inspection item of the eye to be inspected, the inspection result may affect the inspection result of the next inspection item. Therefore, for example, by not executing the inspection items after the specified inspection items, a certain degree of accuracy can be maintained.

[0039] For example, the control unit may omit the execution of the inspection item for obtaining at least any one of the spherical power (spherical correction amount), cylindrical power (cylindrical correction amount) and astigmatism axis angle (astigmatism axis correction amount) for correcting the subject's eye, or cancel the execution of the inspection item based on the comparison result of the comparison processing unit. In addition, for example, the control unit may omit the execution of the inspection item for obtaining the visual acuity value of the subject's eye, or cancel the execution of the inspection item based on the comparison result of the comparison processing unit.

[0040] It should be noted that the control unit of the present embodiment can omit the execution of the inspection item for obtaining the astigmatism axis angle as the correction value of the eye to be inspected, or cancel the execution of the inspection item. For example, in the inspection for obtaining the astigmatism axis angle, the subject needs to compare the visual effects of two inspection sight marks and select any one of the inspection sight marks. For example, in the case where the cylindrical power of the eye to be inspected is weak, especially when the difference in the visual effects of the inspection sight marks is small, the chance of hesitation in the selection increases. Therefore, it is not easy to obtain a highly reliable inspection result, and sometimes the inspection result is never determined. Therefore, by omitting the inspection item for obtaining the astigmatism axis angle or forcing the subsequent inspection items to end, self-eye examination can be carried out smoothly. In particular, it is useful to perform such control when there is an inspection item for obtaining the astigmatism axis angle among the multiple inspection items included in the self-eye examination.

[0041] For example, the control unit may obtain at least any one of the front eyeglass data described later, the heteronormative measurement data described later, and the front subjective measurement data described later as the inspection result of the specified inspection item when the specified inspection item in the self-refraction procedure is omitted or the self-refraction is forcibly terminated. For example, when the specified inspection item is omitted, it is impossible to obtain an inspection result with high reliability in the specified inspection item. In addition, for example, when the self-refraction is forcibly terminated, it is impossible to obtain an inspection result with high reliability in the specified inspection item, and since the inspection items after the specified inspection item are not implemented, there is a state where there is no inspection result. Therefore, for example, by obtaining at least any one of the front eyeglass data, heteronormative measurement data, and front subjective measurement data of the subject's eye as reference data for the inspection result in the specified inspection item, the examiner can easily grasp the optical characteristics of the subject's eye.

[0042] <First Acquisition Unit>

[0043] The subjective optometry device of this embodiment may include a first acquisition unit (for example, the control unit 60). The first acquisition unit acquires at least any one of the front eyeglass data obtained by measuring the optical characteristics of the eyeglasses worn by the subject, the heterognostic measurement data obtained by measuring the optical characteristics of the eye to be examined in a heterognostic manner, and the front subjective measurement data obtained by measuring the optical characteristics of the eye to be examined in a subjective manner in the past. For example, the optical characteristics of the eyeglasses in the front eyeglass data may include the refractive power data of the eyeglass lens (as an example, at least any one of spherical data indicating spherical refractive power, cylindrical data indicating cylindrical refractive power, astigmatism axis data indicating the astigmatism axis angle, etc.). Of course, in addition to the refractive power data of the eyeglass lens, polarization characteristic data, pupil distance, etc. may also be included. In addition, for example, the optical characteristics of the eye to be examined in the heterognostic measurement data may include the eye refractive power data of the eye to be examined (as an example, at least any one of spherical data indicating spherical refractive power, cylindrical data indicating cylindrical refractive power, astigmatism axis data indicating the astigmatism axis angle, etc.). Of course, in addition to the eye refractive power data of the eye to be inspected, polarization characteristic data, interpupillary distance, etc. may also be included. In addition, for example, the optical characteristics of the eye to be inspected in the front subjective measurement data may include the eye refractive power data of the eye to be inspected (as an example, at least any one of spherical data indicating spherical refractive power, cylindrical data indicating cylindrical refractive power, and astigmatism axis data indicating the astigmatism axis angle). Of course, in addition to the eye refractive power data of the eye to be inspected, polarization characteristic data, interpupillary distance, etc. may also be included.

[0044] It should be noted that, in this embodiment, the previous subjective measurement data acquired in the past may be subjective measurement data acquired at a timing earlier than the current time point. For example, it may be subjective measurement data acquired in an examination item performed before a prescribed examination item performed at the current time point among a plurality of examination items for examining the subject's eye. In addition, for example, it may be subjective measurement data acquired at a different date and time using the subjective optometry device of this embodiment or a device different from the subjective optometry device of this embodiment.

[0045] The first acquisition unit of this embodiment may include astigmatism axis data (astigmatism axis angle) as at least any one of the front eyeglasses data, the external sense measurement data, and the front subjective measurement data. That is, the first acquisition unit may acquire at least any one of the astigmatism axis data (astigmatism axis angle) in the front eyeglasses data and the astigmatism axis data (astigmatism axis angle) in the external sense measurement data.

[0046] In addition, the first acquisition unit of the present embodiment may include cylindrical data (cylindrical refractive power) as at least any one of the front eyeglass data, the heteroscopic measurement data, and the front subjective measurement data. That is, the first acquisition unit may acquire at least any one of the cylindrical data (cylindrical refractive power) in the front eyeglass data and the cylindrical data (cylindrical refractive power) in the heteroscopic measurement data.

[0047] For example, the first acquisition unit can acquire at least any one of the front eyeglasses data, the heteronymous measurement data, and the front subjective measurement data input by the examiner's operation of the operating unit (for example, the examiner's controller 10). In addition, for example, the first acquisition unit can read the identifier of each subject and acquire at least any one of the front eyeglasses data, the heteronymous measurement data, and the front subjective measurement data stored in the identifier. As an example, for the identifier, an ID, a character string, a one-dimensional code, a two-dimensional code, a color code, etc. can be used. In addition, for example, the first acquisition unit can acquire at least any one of the front eyeglasses data, the heteronymous measurement data, and the front subjective measurement data by receiving data measured by a device different from the subjective refraction device of the present embodiment. As an example, data obtained by a mirror tester, a heteronymous measurement device, etc. can be received.

[0048] <Second Acquisition Unit>

[0049] The subjective optometry device of this embodiment may include a second acquisition unit (e.g., the control unit 60). For example, the second acquisition unit acquires the correction value of the eye to be examined corrected by the correction unit when performing optometry on the eye to be examined. That is, for example, the second acquisition unit acquires the correction value that changes as the optometry on the eye to be examined is performed. For example, the correction value of the eye to be examined may be at least any one of the spherical power (spherical correction amount), cylindrical power (cylindrical correction amount), and astigmatism axis angle (astigmatism axis correction amount) used to correct the eye to be examined.

[0050] It should be noted that the second acquisition unit of the present embodiment may acquire at least the astigmatism axis angle (astigmatism axis correction amount) as the correction value for correcting the eye to be inspected.

[0051] For example, the second acquisition unit may acquire the correction value of the subject's eye at at least any timing from the start to the end of optometry including a plurality of examination items for the subject's eye. For example, the second acquisition unit may acquire the correction value once during the period from the start to the end of optometry. In addition, for example, the second acquisition unit may acquire the correction value multiple times during the period from the start to the end of optometry. For example, the timing of the end of optometry may be the timing of outputting the final examination result of the subject's eye.

[0052] For example, the second acquisition unit may acquire the correction amount at a specified timing during the inspection of a specified inspection item among a plurality of inspection items of the eye to be inspected. For example, the specified timing may be at least any one of the timing when a certain time has passed, the timing when a specified control action has been performed, and the like. For example, the second acquisition unit may acquire the correction value once during the inspection of the specified inspection item of the eye to be inspected. In addition, for example, the second acquisition unit may acquire the correction value multiple times during the inspection of the specified inspection item of the eye to be inspected. It should be noted that in this case, the second acquisition unit may acquire the correction value of the eye to be inspected each time the operation signal of the subject from the answer input unit is received during the inspection of the specified inspection item of the eye to be inspected. In addition, in this case, the second acquisition unit may acquire the correction value of the eye to be inspected each time at least one of the sight mark presentation unit and the correction unit is controlled during the inspection of the specified inspection item of the eye to be inspected.

[0053] In this embodiment, the predetermined timing may be the timing when the control unit controls the correction unit to change the optical characteristics of the sight mark beam. In other words, the correction value of the eye to be examined may be acquired successively each time the correction value of the eye to be examined is changed.

[0054] <Comparison Processing Unit>

[0055] The subjective optometry device of this embodiment may include a comparison processing unit (for example, the control unit 60). The comparison processing unit compares the allowable value based on at least any one of the front eyeglass data, the heterognostic measurement data, and the front subjective measurement data acquired by the first acquisition unit with the correction value acquired by the second acquisition unit. For example, the comparison processing unit may compare the allowable value based on at least any one of the front eyeglass data, the heterognostic measurement data, and the front subjective measurement data acquired by the first acquisition unit with the correction value acquired by the second acquisition unit at a predetermined timing.

[0056] For example, the comparison processing unit can be configured to compare the allowable value based on at least any one of the front eyeglass data, the heteronormative measurement data, and the front subjective measurement data obtained by the first acquisition unit and the correction value obtained by the second acquisition unit. For example, the comparison processing unit can directly compare the allowable value and the correction value. For example, the comparison processing unit can also perform differential processing as a comparison of the allowable value and the correction value. Thus, for example, a differential result of an optical characteristic (for example, eye refractive power) in the allowable value and the correction value can be obtained. In addition, for example, the comparison processing unit can indirectly compare the allowable value and the correction value by performing a comparison of the deviation information indicating the deviation between the allowable value and the correction value with the correction value. For example, the deviation information based on the allowable value and the correction value can be obtained by their differential processing.

[0057] For example, the comparison processing unit can compare the allowable value of the astigmatism axis data included in at least any one of the front eyeglasses data, the external perception measurement data, and the front subjective measurement data obtained by the first acquisition unit and the astigmatism axis angle included in the correction value obtained by the second acquisition unit. For example, in the inspection of the astigmatism axis angle, the subject needs to select any one of the inspection sight marks with different visual effects, but when this selection is difficult to make, the correction value is likely to deviate significantly from the front eyeglasses data, the external perception measurement data, or the front subjective measurement data. Therefore, by comparing the allowable value based on the astigmatism axis data and the astigmatism axis angle in the correction value, it is particularly easy to confirm whether the inspection of the astigmatism axis angle, whose correction value may deviate compared to other inspections, is being properly conducted.

[0058] For example, the allowable value may be a value used to detect whether to output an alarm. For example, the allowable value may be a value that can be arbitrarily set by the inspector, or may be a fixed value pre-set through experiments or simulations. For example, the allowable value may be set as a prescribed threshold value. As an example, the prescribed threshold value may be the same value as the pre-glasses data, the sensory measurement data, or the pre-subjective measurement data. In addition, as an example, the prescribed threshold value may be a value different from the pre-glasses data, the sensory measurement data, or the pre-subjective measurement data. Such prescribed threshold values ​​may be one or more. For example, in the case of setting multiple prescribed threshold values ​​as the allowable value, the allowable value may be set as a prescribed allowable range.

[0059] For example, the allowable value can be set to the same value regardless of the optical characteristics of the front eyeglass data, the external sense measurement data, or the front subjective measurement data obtained by the first acquisition unit. In addition, for example, the allowable value can be set for each optical characteristic of the front eyeglass data, the external sense measurement data, or the front subjective measurement data obtained by the first acquisition unit. For example, in this case, the allowable value can be changed according to whether the optical characteristics of the front eyeglass data, the external sense measurement data, or the front subjective measurement data exceed the prescribed optical characteristics (as an example, the eye refractive power). As an example, the allowable value can be changed for less than 5.0D and more than 5.0D. In addition, for example, in this case, the allowable value can be changed according to the level of the optical characteristics (eye refractive power) of the front eyeglass data, the external sense measurement data, or the front subjective measurement data. As an example, the allowable value can be changed every time the optical characteristics of the front eyeglass data, the external sense measurement data, or the front subjective measurement data change by 0.25D units, 1.0D units, 5.0D units, etc. It should be noted that, for example, depending on the magnitude of the optical characteristics of the front eyeglass data, the sensory measurement data, or the front subjective measurement data, the degree of susceptibility of the inspection result to these optical characteristics is different. Therefore, by setting different allowable values ​​for each optical characteristic of the front eyeglass data, the sensory measurement data, or the front subjective measurement data, an alarm is appropriately output by the output unit described later.

[0060] For example, the higher the refractive power of the cylindrical lens data in at least any one of the front eyeglass data, the heteronymous measurement data, and the front subjective measurement data, the more strictly the allowable value is set. For example, when the first cylindrical lens data has a high refractive power (for example, -3.00D) and the second cylindrical lens data has a low refractive power (for example, -0.50D) compared to the first cylindrical lens data, the allowable value of the first cylindrical lens data can be set smaller than that of the second cylindrical lens data. As an example, in the case where the allowable value is set as a prescribed threshold, the allowable value (threshold) of the first cylindrical lens data can be set smaller than the allowable value (threshold) of the second cylindrical lens data. In addition, as an example, in the case where the allowable value is set as a prescribed allowable range, the allowable value (allowable range) of the first cylindrical lens data can be set narrower than the allowable value (allowable range) of the second cylindrical lens data.

[0061] For example, the higher the refractive power of the cylinder data of the eye to be examined, the easier it is for a difference in the visual effect of checking the sight mark in the astigmatism axis check to occur, and therefore, the allowable range of axis deviation under the astigmatism axis angle in the subjective measurement can be set to be narrower relative to the astigmatism axis angle of the front eyeglasses data, the external sense measurement data, or the front subjective measurement data. On the other hand, for example, the lower the refractive power of the cylinder data of the eye to be examined, the easier it is for a difference in the visual effect of checking the sight mark in the astigmatism axis check to occur, and therefore, the allowable range of axis deviation under the astigmatism axis angle in the subjective measurement can be set to be wider relative to the astigmatism axis angle of the front eyeglasses data, the external sense measurement data, or the front subjective measurement data. Therefore, by setting the allowable value based on the cylinder data of the front eyeglasses data, the external sense measurement data, or the front subjective measurement data, an alarm is appropriately output by the output unit described later.

[0062] <Output Unit>

[0063] The subjective optometry device of this embodiment is provided with an output unit (e.g., the control unit 60). The output unit outputs an alarm based on the comparison result of the comparison processing unit. For example, the alarm may be an alarm for notifying an abnormality in the examination of the eye to be examined. For example, the alarm may be an alarm that enables identification of whether the examination of the eye to be examined is normal or abnormal. For example, the alarm may be an alarm that enables identification of whether the examination of the eye to be examined is normal. For example, the alarm may be an alarm that enables identification of an abnormality in the examination of the eye to be examined.

[0064] As an example, the alarm may be an alarm output in a form different from the output when the self-refraction is normally performed. In this case, the inspection results for each inspection item may be output in at least one of a blank column, coloring, color distinction, etc. In addition, as an example, the alarm may be an alarm for reporting that the correction value of the inspected eye exceeds the allowable value based on at least one of the front eyeglass data, the external sense measurement data, and the front subjective sense measurement data. In other words, the alarm may be an alarm for supporting the judgment of whether the correction value of the inspected eye is appropriate.

[0065] For example, the alarm may be an alarm that is output to the inspector to notify the inspector of an abnormality in the examination. In addition, for example, the alarm may be an alarm that is output to the subject to notify the inspector of an abnormality in the examination. As an example, in this case, an alarm may be output to the subject to guide him to find the inspector. As a result, the subject finds the inspector, so the inspector can be notified of the abnormality in the examination. It should be noted that the alarm may be output to at least either the inspector or the subject. For example, in the case of notifying the inspector of an abnormality in the examination, only the inspector can be notified to avoid making the subject feel uneasy.

[0066] For example, the alarm may be a structure capable of reporting an abnormality of the inspection. For example, the alarm may be a structure for displaying a message on the display unit. In addition, for example, the alarm may be a structure for emphasizing the screen in the display unit. As an example, it may be at least one of the inversion and change of the color of the screen, the flickering of the screen, the change of the display size, etc. In addition, for example, the alarm may be a structure for displaying an identification (for example, at least one of a window, a mark, an icon, text, a number, a symbol, etc.) on the display unit. Of course, for example, the alarm may be a structure for emphasizing such an identification.

[0067] For example, the output unit can control the display unit so that the display unit displays an alarm. In addition, for example, the output unit can control the sound generating unit (as an example, a speaker) so that the sound generating unit generates an alarm in the form of sound. In addition, for example, the output unit can control the reporting unit (as an example, a light) to indicate an alarm by lighting up or flashing the reporting unit. In addition, for example, the output unit can control the printing unit (as an example, a printer) so that the printing unit prints an alarm. In addition, for example, the output unit can control an external storage unit (as an example, a memory, a server) to send an alarm to an external storage unit. Of course, for example, the output unit can also execute a control that combines these controls, and can also execute a control different from these controls. As a result, the inspector can easily confirm the inspection status and can smoothly conduct the inspection.

[0068] For example, the output unit may output an alarm during the inspection of a specified inspection item among a plurality of inspection items of the eye to be inspected. For example, the output unit may output an alarm at any timing during the inspection of the specified inspection item. As an example, during the inspection of the specified inspection item, an alarm may be output at at least any timing including a timing when a certain time has passed, a timing when the correction value of the eye to be inspected changes, a timing when the correction value of the eye to be inspected is determined, etc. For example, by outputting an alarm during the inspection of the specified inspection item in this way, it is possible to easily determine whether the correction value of the eye to be inspected exceeds the allowable value. In addition, by outputting an alarm during the inspection of the specified inspection item, it is possible to easily determine the next action such as whether to continue the inspection of the specified inspection item or to interrupt the inspection of the specified inspection item.

[0069] For example, the output unit can output an alarm when multiple inspection items for the inspected eye are completed. For example, by outputting an alarm at the timing when multiple inspection items are completed, it is easy to determine whether the correction value of the inspected eye exceeds the allowable value. Therefore, the inspector can easily determine whether there is no problem with the inspection result.

[0070] It should be noted that, for example, the output unit may be a structure that outputs at least one of the alarm during the inspection of the specified inspection items as described above and the alarm when the plurality of inspection items are completed. Of course, it may also be a structure that outputs both the alarm during the inspection of the specified inspection items and the alarm when the plurality of inspection items are completed.

[0071] The active optometry device of this embodiment can perform at least one of control for omitting a prescribed inspection item in optometry and performing the next inspection item and outputting an alarm based on the comparison result of the comparison processing unit. In addition, the active optometry device of this embodiment can perform at least one of control for forcibly ending optometry without performing a prescribed inspection item in optometry and outputting an alarm based on the comparison result of the comparison processing unit.

[0072] It should be noted that the present disclosure is not limited to the device described in this embodiment. For example, the terminal control software (program) that performs the functions of the above-mentioned embodiment can also be supplied to the device or system via a network or various storage media, and the control device (e.g., CPU, etc.) of the device or system reads and executes the program.

[0073] <Example>

[0074] An example of a subjective optometry device of the present embodiment is described. In this example, a subjective optometry device for subjectively measuring the optical characteristics of an eye to be examined is illustrated, which is integrally provided with a display for displaying a test target to an eye to be examined and an eye refractive power measuring unit for changing the optical characteristics of a target light beam emitted from the display. Of course, for example, the display may also be provided as a housing independent of the subjective optometry device.

[0075] <Device Appearance>

[0076] Figure 1A and Figure 1B 2 is an external view of the subjective optometry device 100 . Figure 1A This is a state where the eye refractive power measurement unit 40 is supported at the standby position. Figure 1B For example, the subjective optometry device 100 includes a housing 1, a presentation window 2, a speaker 3, a holding unit 4, an examiner controller 10, a subject controller 20, an eye refractive power measurement unit 40, and the like.

[0077] The housing 1 has a light projection optical system 30 inside. The presentation window 2 allows the sight mark beam generated by the light projection optical system 30 to pass through. The sight mark beam is projected to the subject's eye E through the presentation window 2. It should be noted that when an eye refractive power measuring unit 40 is arranged between the subject's eye E and the presentation window 2 (see Figure 1B), a sight mark beam is projected to the subject's eye E via the presentation window 2 and the inspection window 43 described later. Thus, the inspection sight mark is presented to the subject's eye E. The speaker 3 outputs voice guidance and the like.

[0078] The holding unit 4 holds the eye refractive power measurement unit 40. For example, the holding unit 4 moves the arm by driving a driving unit (motor, etc.) (not shown), thereby moving the eye refractive power measurement unit 40 connected to the arm. Thus, the standby position and the measurement position of the eye refractive power measurement unit 40 are switched.

[0079] The examiner controller 10 is used for the examiner to operate the subjective optometry device 100. The examiner controller 10 includes a switch unit 11, a monitor 12, and the like. The switch unit 11 inputs signals for making various settings (for example, movement of the eye refractive power measurement unit 40, etc.). The monitor 12 displays a self-optology assistance screen described later. For example, various information (for example, examination results of the subject's eye E, etc.) can be displayed on the self-optology assistance screen. It should be noted that the monitor 12 can function as a touch panel that also serves as the switch unit 11. The signal from the examiner controller 10 is output to the control unit 60 via wired communication or wireless communication.

[0080] The subject controller 20 is used to input the subject's answer. The subject controller 20 includes an answer lever 21, an answer button 22, etc. The answer lever 21 is used when the subject inputs a direction relative to the inspection sight mark. For example, signals of four directions, namely, up, down, left, and right, can be input by tilting the operation. The answer button 22 is used when the subject does not select a direction relative to the inspection sight mark. The signal from the subject controller 20 is output to the control unit 60 via wired communication or wireless communication.

[0081] <Light projection optical system>

[0082] Figure 2A and Figure 2B It is a schematic diagram of the light projection optical system 30 . Figure 2A Shows the optical configuration for distance vision testing. Figure 2B The optical arrangement for near vision inspection is shown. The light projection optical system 30 projects a target beam toward the subject's eye E. For example, the light projection optical system 30 includes a display 31, a plane mirror 32, a concave mirror 33, a near-far switch 34, and the like.

[0083] The display 31 displays an optotype (e.g., a fixation optotype, a test optotype, etc.). The optotype light beam emitted from the display 31 is imaged on the fundus of the eye E to be inspected, thereby presenting the optotype to the eye E to be inspected. For example, the display 31 may be an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence) plasma display, or the like.

[0084] The display 31 may include a polarizing optical component. For example, the polarizing optical component may be disposed on the front surface of the display 31, or the polarizing optical component may be built into the display 31 and integrally disposed. Thus, the display 31 can emit linearly polarized light or circularly polarized light having polarization in a predetermined direction (vertical direction, horizontal direction, or oblique 45 degree direction, etc.).

[0085] The plane mirror 32 reflects the sight mark beam from the display 31 and guides it to the concave mirror 33. In addition, the plane mirror 32 reflects the sight mark beam from the display 31 and guides it to the eye to be inspected E. For example, in the near vision test of the eye to be inspected E, the plane mirror 32 is arranged so that the distance (presentation distance) from the eye to be inspected E to the display 31 is optically 40 cm. It should be noted that a reflective member such as a prism, a beam splitter, or a half mirror can be used instead of the plane mirror 32.

[0086] The concave mirror 33 reflects the sight mark beam from the display 31 and guides it to the plane mirror 32. For example, in the far vision test of the eye E to be examined, the concave mirror 33 is arranged so that the distance (presentation distance) from the eye E to be examined to the display 31 is optically 5 m. It should be noted that a reflecting member such as an aspherical mirror or a free-form surface mirror can be used instead of the concave mirror 33. In addition, a lens or the like can be used instead of the concave mirror 33.

[0087] The near-far switching unit 34 switches the configuration of the display 31 during the distance vision test and the near vision test of the subject's eye E. For example, the near-far switching unit 34 drives a driving unit (motor, etc.) (not shown) to move the holding unit, thereby moving the display 31 held by the holding unit. Thus, the distance vision configuration and the near vision configuration of the display 31 are switched.

[0088] For example, during the distance vision test of the subject's eye E, the display screen of the display 31 faces the back side of the housing 1 (see FIG. Figure 2A ). The sight mark beam from the display 31 passes through the optical axis L1 and is incident on the plane mirror 32, and is reflected by the plane mirror 32 in the direction of the optical axis L2. In addition, it passes through the optical axis L2 and is incident on the concave mirror 33, and is reflected by the concave mirror 33 in the direction of the optical axis L3. In addition, it passes through the optical axis L3 and is incident on the plane mirror 32, and is reflected by the plane mirror 32 in the direction of the optical axis L4. Thus, the sight mark beam is projected onto the subject's eye E, passes through the interior of the housing 1 through the various optical components, and is emitted to the outside of the housing 1.

[0089] For example, during the near vision test of the subject's eye E, the display screen of the display 31 is directed toward the upper surface of the housing 1 (see FIG. Figure 2BThe sight mark beam from the display 31 passes through the optical axis L3 and enters the plane mirror 32, and is reflected in the direction of the optical axis L4 by the plane mirror 32. Thus, the sight mark beam is projected to the subject's eye E inside the housing 1 through each optical component and emitted to the outside of the housing 1.

[0090] <Eye refractive power measurement unit (corrective optical system)>

[0091] Figure 3 : is a schematic diagram of an eye refractive power measuring unit 40. The eye refractive power measuring unit 40 measures the refractive power of the subject's eye E in a subjective manner. In addition, the eye refractive power measuring unit 40 is used as a corrective optical system. The corrective optical system is arranged in the optical path of the projection optical system 30, and changes the optical characteristics of the sight mark beam. For example, the eye refractive power measuring unit 40 includes a forehead pad 41, a lens unit 42, an inspection window 43, a moving unit 44, etc.

[0092] The forehead pad 41 is fixed to the subject's eye E at a predetermined inspection position by abutting against the subject's head, and the distance from the subject's eye E to the inspection window 43 is kept constant. The lens unit 42 includes a left lens unit 42L and a right lens unit 42R, which are a pair of left and right lenses. The lens unit 42 includes inspection windows 43 (a left inspection window 43L and a right inspection window 43R).

[0093] The moving unit 44 adjusts the interval between the left lens unit 42L and the right lens unit 42R and the convergence angle (convergence angle) of the left lens unit 42L and the right lens unit 42R. For example, the moving unit 44 adjusts the interval between the left lens unit 42L and the right lens unit 42R by driving the driving unit 45 (the left driving unit 45L and the right driving unit 45R). In addition, for example, the moving unit 44 adjusts the convergence angle of the left lens unit 42L and the right lens unit 42R by driving the driving unit 46. It should be noted that for the detailed structure of the moving unit 44, please refer to Japanese Patent Publication No. 2004-329345, for example.

[0094] The lens unit 42 has a lens disk 50 inside. The lens disk 50 has a pair of left and right lens disks 50L and right lens disks 50R. The lens disk 50 is rotated by the drive of the drive unit 51 (left drive unit 51L and right drive unit 51R). In addition, the lens disk 50 arranges the opening (or lens of 0D) and a plurality of optical elements 52 (left optical element 52L and right optical element 52R) on the same circumference. These optical elements are rotated by the drive of the drive unit 53 (left drive unit 53L and right drive unit 53R). As a result, the desired optical element 52 is switched and arranged on the inspection window 43 at a desired angle.

[0095] The lens disk 50 is composed of one lens disk or a plurality of lens disks. For example, a spherical lens disk, a cylindrical lens disk, an auxiliary lens disk, etc. may be provided. As an example, the spherical lens disk may have a plurality of spherical lenses with different spherical degrees (spherical refractive powers). In addition, as an example, the cylindrical lens disk may have a plurality of cylindrical lenses with different cylindrical degrees (cylindrical refractive powers). In addition, as an example, the auxiliary lens disk may have a shielding plate, a polarizing lens (polarizing lenses 54L and 54R), a red filter / green filter, a dispersion prism, a Maddox rod lens, a rotating prism, a cross cylindrical lens, an automatic cross cylindrical lens, an alignment lens, etc. The drive unit 51 and the drive unit 53 may be provided for each lens disk.

[0096] It should be noted that the eye refractive power measuring unit 40 only needs to be able to change the optical characteristics of the sight mark beam. For example, it can be a structure that controls an optical element as in the present embodiment. In addition, for example, it can also be a structure that controls a wavefront modulation element.

[0097] <Control Unit>

[0098] Figure 4 This is a schematic diagram of the control system of the subjective optometry device 100. For example, the control unit 60 includes a CPU (processor), RAM, ROM, etc. For example, the CPU controls the various components in the subjective optometry device 100. For example, the RAM temporarily stores various information. For example, the ROM stores various programs for controlling the operation of the subjective optometry device 100, inspection sight mark data, etc. As an example, a program for implementing an application (self-optometry application) that automatically performs optometry based on answers input by the subject is stored. It should be noted that the control unit 60 can also be composed of multiple control units (that is, multiple processors).

[0099] The control unit 60 is connected to the speaker 3, the display 31, the controller 10 for the examiner, the controller 20 for the subject, a nonvolatile memory 70 (hereinafter referred to as the memory 70), etc. In addition, the control unit 60 is connected to the drive unit of the holding unit 4, the drive unit of the near-far switching unit 34, the drive unit of the eye refractive power measurement unit 40 (drive units 45, 46, 51, 53), etc.

[0100] The memory 70 is a non-transitory storage medium that can retain stored content even when power supply is cut off. For example, a hard disk drive, a flash ROM, a USB memory, etc. can be used as the memory 70.

[0101] <Control Action>

[0102] The control operation in the subjective optometry device 100 having the above-described configuration will be described.

[0103] For example, in self-refraction, the subjective examination of the subject's eye is performed in sequence. For example, based on the subjective eye refractive power (perceptual value) of the subject's eye, the subject's eye is corrected to a predetermined eye refractive power (0D, etc.) with a predetermined correction amount, and the subjective value of the subject's eye is obtained.

[0104] For example, the subjective examination includes multiple examination items. As an example, it may include a red-green examination for adjusting the spherical correction amount of the eye E under examination in the initial state to an appropriate spherical correction amount. In addition, as an example, it may include a cross-cylinder examination for adjusting the cylindrical correction amount and the astigmatism axis correction amount of the eye E under examination in the initial state to an appropriate cylindrical correction amount and astigmatism axis correction amount. In addition, as an example, it may include a vision examination for measuring the highest visual acuity value in a state where the spherical correction amount, cylindrical correction amount and astigmatism axis correction amount of the eye E under examination are corrected with appropriate spherical correction amount, cylindrical correction amount and astigmatism axis correction amount. For example, the optometry in each examination item is automatically performed by executing a self-optology application.

[0105] <Alignment of the Eye to be Examined>

[0106] First, the examiner operates the examiner controller 10 to select a switch (not shown) for lowering the eye refractive power measurement unit 40. For example, the control unit 60 drives the drive unit of the holding unit 4 based on the output of the operation signal from the examiner controller 10. For example, the eye refractive power measurement unit 40 is thereby moved to the inspection position (see Figure 1B ) moves, and the eye refractive power measurement unit 40 is configured on the optical axis L4.

[0107] Next, the examiner aligns the subject's eye E with respect to the eye refractive power measuring unit 40. For example, the examiner instructs the subject to place his face against the forehead pad 41 and look at the inspection window 43. The subject looks at the inspection window 43 according to the examiner's instruction. The examiner adjusts the position of the forehead pad 41 by operating the forehead pad adjustment knob (not shown) so that the corneal vertex distance VD of the subject's eye becomes a predetermined distance (for example, 12 mm). In addition, for example, the examiner operates the examiner controller 10 and inputs the pre-measured pupil distance PD of the subject's eye E. For example, the control unit 60 drives the drive unit 45 to adjust the interval between the left and right lens units 42, and changes the interval of the inspection window 43 in accordance with the pupil distance PD of the subject's eye. Thus, the alignment of the subject's eye E is completed.

[0108] <Determination of the refractive power of the eye being examined>

[0109] Next, the examiner obtains the other-eye refractive power of the subject's eye E. For example, the other-eye refractive power measured in advance using the other-eye refractive power measuring device is obtained. For example, the examiner operates the examiner controller 10 to input the subject ID and operates a predetermined switch. For example, based on the input signal from the switch, the control unit 60 outputs an operation signal to the other-eye refractive power measuring device so that it sends the other-eye refractive power corresponding to the subject ID. For example, if the control unit of the other-eye refractive power measuring device receives the subject ID from the subjective optometry device 100, it calls out the other-eye refractive power corresponding to the subject ID from the memory and sends it to the subjective optometry device 100. The control unit 60 of the subjective optometry device 100 receives the other-eye refractive power sent from the other-eye refractive power measuring device. In this way, the other-eye refractive power of the subject's eye E can be obtained. For example, in this embodiment, it is assumed that the refractive power of the alien eye is 0.00D in spherical power, -1.00D in cylindrical power, and 30 degrees in astigmatism axis angle.

[0110] <Acquisition of allowable value>

[0111] Next, the control unit 60 obtains an allowable value based on the obtained external eye refractive power. For example, in the present embodiment, regardless of the value of the external eye refractive power, the same allowable value (the same allowable range) is applied. For example, for the spherical power in the external eye refractive power, regardless of its value, ±0.50D is set as the allowable value. For example, for the cylindrical power, regardless of its value, ±0.50D is set as the allowable value. For example, for the astigmatism axis angle, regardless of its angle, ±15 degrees is set as the allowable value.

[0112] In this embodiment, the spherical power of the other eye is 0.00 D, so the allowable value of the spherical correction amount of the eye to be examined is -0.50 D to +0.50 D. In addition, the cylindrical power of the other eye is -1.00 D, so the allowable value of the cylindrical correction amount of the eye to be examined is -1.50 D to -0.50 D. In addition, the astigmatism axis angle of the other eye's refractive power is 30 degrees, so the allowable value of the astigmatism axis correction amount of the eye to be examined is 15 degrees to 45 degrees.

[0113] <Subjective inspection>

[0114] For example, the control unit 60 sets the refractive power of the other eye as the initial value of the subjective examination. For example, the control unit 60 controls the eye refractive power measurement unit 40 to arrange the optical element 52 with a predetermined spherical power and the optical element 52 with a cylindrical power in the inspection window 43. In addition, for example, the control unit 60 arranges the optical element 52 with a predetermined cylindrical power in the inspection window 43 at a predetermined astigmatism axis angle. As a result, the subject's eye E is corrected at the initial value.

[0115] It should be noted that lens information of the subject's front glasses (for example, optical characteristics of the glasses lens) measured by the glasses lens measuring device may be used as the initial value of the subject's eye E. In addition, the measurement result of subjective measurement of the subject measured by the subjective optometry device 100 of this embodiment or a subjective optometry device different from the subjective optometry device 100 of this embodiment may be used as the initial value of the subject's eye E.

[0116] After correcting the eye E to be examined with the initial value, the examiner presses a button (not shown) for starting self-optology. The control unit 60 starts self-optology for the eye E to be examined based on an input signal from the button (not shown) for starting self-optology. As an example, in self-optology, a red-green test (S), a cross-cylinder test (A), a cross-cylinder test (C), a red-green test, and a VA (visual acuity) test are performed on the eye E to be examined in sequence. In the red-green test (S), the spherical power of the eye to be examined is measured. In the cross-cylinder test (A), the astigmatism axis angle of the eye to be examined is measured. In the cross-cylinder test (C), the cylindrical power of the eye to be examined is measured. In the subsequent red-green test, it is confirmed whether the adjustment of the eye to be examined has played a role in the performed test. In the VA (visual acuity) test, the maximum visual acuity of the eye to be examined is measured. For example, the subject confirms the inspection sight mark according to the voice guidance and operates the answer lever 21 or the answer button 22 of the subject controller 20. The control unit 60 performs self-optometry based on an operation signal from the subject's controller 20 .

[0117] Here, in the present embodiment, in each examination of the eye to be examined, when the correction amount of the eye to be examined exceeds the allowable value based on the refractive power of the other eye, an alarm is output. For example, in the red-green examination (S), if the spherical correction amount of the eye to be examined does not fall between -0.50D and +0.50D, an alarm is output. Similarly, in the cross-cylinder examination (A), if the astigmatism axis correction amount of the eye to be examined does not fall between 15 degrees and 45 degrees, an alarm is output. Similarly, in the cross-cylinder examination (C), if the cylindrical correction amount of the eye to be examined does not fall between -1.50D and -0.50D, an alarm is output. Below, the acquisition of the astigmatism axis angle in the cross-cylinder examination (A) and the output of the alarm are explained in detail as an example.

[0118] <Obtaining the correction amount of astigmatism axis>

[0119] For example, in the cross-cylindrical examination (A) in the present embodiment, two dot-matrix sight marks are presented to the eye E to be inspected, and it is determined whether the astigmatism axis angle of the eye E to be inspected and the desired astigmatism axis correction amount for correcting the eye E to be inspected are consistent. For example, if the visual effects of the two dot-matrix sight marks are of the same degree, it is determined that the angles are consistent. For example, if there is a difference in the visual effects of the two dot-matrix sight marks, it is determined that the angles are inconsistent.

[0120] For example, the automatic cross-cylinder method is used for cross-cylinder examination during self-refraction. The automatic cross-cylinder method is a method in which two dot matrix sight marks are simultaneously presented to the subject through the configuration of an automatic cross-cylinder lens, and the subject visually confirms and compares them. Here, the case where the left eye is the measurement eye and the right eye is the non-measurement eye is taken as an example.

[0121] For example, the control unit 60 drives the left drive unit 51L to place the automatic cross cylindrical lens on the left inspection window 43L. For example, the automatic cross cylindrical lens is a lens having two prism areas that is divided into two parts with the center of the lens as an axis and is given a cylindrical power so that the astigmatism axes are orthogonal to each other. In addition, the control unit 60 drives the right drive unit 51R to place the shielding plate on the right inspection window 43R. Furthermore, the control unit 60 controls the display 31 to display a dot matrix sight mark on its screen.

[0122] The subject places his forehead against the forehead pad 41 and observes the dot matrix sight mark through the inspection window 43 and the presentation window 2. For example, the visual field of the left eye is separated into two by the prism component of the automatic cross cylindrical lens. That is, one dot matrix sight mark displayed on the display 31 is separated into two dot matrix sight marks by passing through two prism areas. For example, the visual field of the right eye (non-measurement eye) is shielded by a shielding plate.

[0123] The control unit 60 causes the cross-cylindrical examination to be performed. For example, when the cross-cylindrical examination begins, the control unit 60 generates voice guidance from the speaker 3 indicating the operating method of the controller 20 for the subject. As an example, the following voice guidance can be generated: tilt the answer rod 21 in the direction of the dot matrix sight mark that can be clearly visually confirmed among the two dot matrix sight marks, and if the degrees are the same, press the answer button 22. For example, the control unit 60 drives the left drive unit 53L to rotate the automatic cross-cylindrical lens of the left inspection window 43L in a manner that becomes an axis angle for adjusting the astigmatism axis angle. In addition, for example, voice guidance is generated from the speaker 3 to inquire about the direction of the dot matrix sight mark that the subject can clearly visually confirm.

[0124] When receiving an input signal from the answer rod 21 (when the direction of the dot matrix sight mark is selected), the control unit 60 rotates the automatic cross cylindrical lens according to the tilting direction of the answer rod 21 to change the astigmatism axis angle. In addition, after changing the astigmatism axis angle, the control unit 60 again generates a voice guidance to inquire about the direction of the dot matrix sight mark. For example, each time the control unit 60 changes the astigmatism axis angle in this way, it obtains the value of the changed astigmatism axis angle as the current astigmatism axis correction amount.

[0125] <Comparison of astigmatism axis correction amount and allowable value>

[0126] For example, the cross-cylindrical examination (A) requires comparison of the visual effects of two dot-matrix sight marks before answering, so the subject may hesitate in answering the examination. In particular, if the difference in the visual effects of the two dot-matrix sight marks is small, the chance of hesitation in answering increases. For example, if the examination is carried out while the subject continues to give ambiguous answers, the correct examination result of the astigmatism axis angle cannot be obtained, which may affect the subsequent examination and the examination results.

[0127] Therefore, in this embodiment, it is detected whether the correction amount of the eye to be inspected, which is changed successively during the cross-cylindrical examination, exceeds the allowable value based on the refractive power of the other eye. For example, as mentioned above, the astigmatism axis angle in the refractive power of the other eye is 30 degrees, and the allowable value is ±15 degrees. Here, it is assumed that 50 degrees is obtained as the current astigmatism axis correction amount of the eye to be inspected.

[0128] For example, the control unit 60 compares the current astigmatism axis correction amount with the allowable value. For example, the control unit 60 compares the current astigmatism axis correction amount (50 degrees) with the allowable value (15 degrees to 45 degrees). As an example, it is determined whether the current astigmatism axis correction amount is below the upper limit of the allowable value and above the lower limit of the allowable value. Thus, for example, it is detected whether the current astigmatism axis correction amount falls within the allowable value.

[0129] <Output of alarm>

[0130] Figure 5 This is an example of a self-optology support screen displayed on the monitor 12 of the examiner controller 10. For example, the self-optology support screen 200 includes an operation image area 210, a parameter screen 220, a progress step display area 230, and the like.

[0131] The operation image area 210 displays an operation image containing information on the optical characteristics (eye refractive power) of the eye to be inspected. For example, in the operation image, a value related to the optical characteristics of the eye to be inspected is displayed for each type of optical characteristics. The examiner can indicate a value for each type of multiple optical characteristics by operating various buttons and values ​​on the operation image area 210 via the touch panel or the switch unit 11. It should be noted that if self-refraction is performed appropriately, the corrected value of the optical characteristic displayed in the operation image becomes the measured value of the optical characteristic of the eye to be inspected.

[0132] The parameter screen 220 is displayed when a parameter button 233 described later is pressed. The value 221 of the refractive power of the eye to be examined and the current correction value 222 (or the test result) of the eye to be examined are displayed on the parameter screen 220. As an example, the value 221 of the refractive power of the eye to be examined and the eye refractive power (spherical refractive power, cylindrical refractive power, astigmatism axis angle, etc.) in the current correction value 222 are displayed.

[0133] The process display area 230 is provided with a process display column 231, a parameter button 233, etc. The process display column 231 displays the inspection procedure of the process of the self-eye test setting being executed. Figure 5 In the example shown, an identification display is performed to identify the process being performed (the inspection item being performed during the inspection) in the entire process (that is, the multiple inspections included in the process). In this embodiment, the inspection item is displayed on the process by an arrow 232 and a thick frame as an identification display. The process display field 231 displays a part of an example of the self-eye test process used in the subjective eye test device 100 of this embodiment (in Figure 5 Parameter button 233 is a button for displaying parameter screen 220. It should be noted that if the correction amount of the subject's eye exceeds the allowable value, an alarm mark 234 is displayed on parameter button 233.

[0134] For example, if the control unit 60 detects that the current astigmatism axis correction amount is not within the allowable value, it displays an alarm on the self-optometry support screen 200. It should be noted that the alarm on the self-optometry support screen 200 may be any configuration as long as it can warn the examiner that the current astigmatism axis correction amount exceeds the allowable value.

[0135] For example, the control unit 60 can invert the color of the process 231 in the process display column 231. In addition, for example, the control unit 60 can display the alarm mark 234 on the parameter button 233. For example, the alarm mark 234 can be a logo indicating that there is a notification. Of course, as long as it is a mark that can confirm whether there is a notification, it can be different from the logo. For example, by confirming the change in the color of the process display column 231 and the display of the alarm mark 234, the inspector can recognize that there may be a problem in the cross-cylindrical inspection.

[0136] Furthermore, if the examiner presses the parameter button 233, the control unit 60 can display the parameter screen 220 based on the input signal of the parameter button 233. For example, in the parameter screen 220, the value 221 of the refractive power of the subject's eye and the current correction value 222 of the subject's eye are displayed. For example, when the correction amount of the subject's eye exceeds the allowable value, the value 221 can be highlighted (for example, bold, underline, change of text color, etc.). For example, the examiner confirms the current correction value 222 (in this embodiment, the astigmatism axis correction amount) of the parameter screen 220 to confirm the examination status of the subject. For example, the examiner can allow the self-refraction to be performed as it is, or interrupt the self-refraction and perform a manual examination, or perform the cross-cylinder examination (A) again from the beginning as needed.

[0137] In the above, the case where an alarm (for example, an alarm mark 234) is displayed on the self-optometry assistance screen 200 in <Output of alarm> after executing the control from <Alignment of the eye to be examined> to <Comparison of the astigmatism axis correction amount with the allowable value> is taken as an example, but it is not limited to this. For example, the cross-cylinder examination (A) in the current examination may be terminated based on the result of the comparison processing of whether the current astigmatism axis correction amount of the eye to be examined E falls within the allowable value, and the examinations after the next cross-cylinder examination (C) may not be performed, so that the self-optometry is forced to end. In addition, for example, based on the result of the comparison processing of whether the current astigmatism axis correction amount of the eye to be examined E falls within the allowable value, the cross-cylinder examination (A) in the current examination may be omitted, and the next cross-cylinder examination (C) may be performed. In other words, the cross-cylinder examination (A) in the current examination may be interrupted, and the examination items may be automatically transferred by skipping the acquisition of the examination result of the astigmatism axis correction amount in the cross-cylinder examination (A) and performing the next cross-cylinder examination (C).

[0138] <Interruption of Cross-Cylinder Inspection (A)>

[0139] First, the case where the cross cylinder test (A) is stopped and the self-optometry is forcibly terminated is taken as an example. Here, the control from <alignment of the eye to be examined> to <comparison of the astigmatism axis correction amount with the allowable value> is the same, so the description is omitted.

[0140] For example, the control unit 60 detects whether the correction amount that is successively changed during the cross-cylindrical examination of the eye to be examined exceeds the allowable value based on the refractive power of the other eye. In addition, for example, if the control unit 60 detects that the current correction amount of the eye to be examined does not fall within the allowable value, the cross-cylindrical examination (A) in the current examination is terminated. Here, if the current correction amount of the astigmatism axis of the eye to be examined does not fall between 15 degrees and 45 degrees, which is the allowable value of the cross-cylindrical examination (A), the cross-cylindrical examination (A) is automatically terminated. For example, the control unit 60 can make not applicable (as an example, N / A) be stored in the memory 70 as the inspection result of the cross-cylindrical examination (A) of the eye to be examined. In addition, for example, the control unit 60 can make the current correction value of the eye to be examined (in other words, the correction value before the termination) be stored in the memory 70 as the inspection result of the cross-cylindrical examination (A) of the eye to be examined.

[0141] For example, if the control unit 60 obtains the test result of the cross-cylinder test (A) for the subject's eye E, the cross-cylinder test (C), red-green test, and VA (visual acuity) test scheduled after the cross-cylinder test (A) are canceled, and the self-optometry is forced to end. For example, the test results for each canceled test item may be stored in the memory 70 as not applicable.

[0142] For example, as mentioned above, the subject sometimes continues to give ambiguous answers during the cross-cylindrical examination (A). In particular, when the cylindrical power of the subject's eye is weak, the difference between the two examination sight marks is small, so ambiguous answers are likely to continue, and there is a possibility that reliable examination results may not be obtained. Therefore, by comparing the current correction value and the allowable value of the subject's eye and terminating the examination of the specified examination items (here is the cross-cylindrical examination (A)) according to the situation, the burden on the subject can be reduced. In addition, by not executing the examination items after the specified examination items, the possibility of obtaining examination results with low reliability for these examination items can be suppressed.

[0143] It should be noted that, for example, when the cross-cylinder examination (A) of the subject's eye E is terminated during the self-optometry of the subject's eye E and the execution of subsequent examinations is canceled, an alarm may be displayed on the self-optometry assistance screen 200. As an example, at least one of a message indicating that the self-optometry is forcibly terminated, an alarm mark 234, etc. may be displayed to the examiner. In addition, for example, the result display column 241 described later may be displayed on the self-optometry assistance screen 200 to indicate which of the multiple examination items has been performed.

[0144] <Omission of Cross-Cylinder Inspection (A) and Transition to Cross-Cylinder Inspection (C)>

[0145] Next, the case where the cross cylinder test (A) is omitted and the process is switched to the cross cylinder test (C) is given as an example. Here, the control from <Alignment of the eye to be examined> to <Comparison of the astigmatism axis correction amount with the allowable value> is the same, so the description is omitted.

[0146] For example, the control unit 60 detects whether the correction amount that is successively changed during the cross-cylinder examination of the eye to be examined exceeds the allowable value based on the refractive power of the other eye. In addition, for example, if the control unit 60 detects that the current astigmatism axis correction amount of the eye to be examined does not fall within the allowable value, the cross-cylinder examination (A) in the current examination is interrupted and automatically ends. For example, the control unit 60 can make it inapplicable as the examination result of the cross-cylinder examination (A) for the eye to be examined and stored in the memory 70. In addition, for example, the control unit 60 can store the current correction value of the eye to be examined as the examination result of the cross-cylinder examination (A) for the eye to be examined in the memory 70.

[0147] For example, if the control unit 60 obtains the inspection result of the cross-cylindrical examination (A) for the subject's eye E, the inspection item is transferred to the cross-cylindrical examination (C) planned after the cross-cylindrical examination (A). For example, the control unit 60 drives the left drive unit 53L to rotate the automatic cross-cylindrical lens of the left inspection window 43L in a manner that becomes an axis angle for adjusting the cylindrical degree. In addition, for example, the control unit 60 generates voice guidance from the speaker 3 to inquire about the direction of the dot matrix sight mark that the subject can clearly visually confirm. For example, the subject operates the subject controller 20 to tilt the answer rod 21 in the direction of the dot matrix sight mark that can be clearly visually confirmed among the two dot matrix sight marks.

[0148] For example, in the cross-cylinder test (C), the control unit 60 can also detect whether the correction amount of the subject's eye exceeds the allowable value based on the refractive power of the other eye through various comparison processes. For example, when the control unit 60 detects that the current cylinder correction amount of the subject's eye does not fall within the allowable value, it can also omit the cross-cylinder test (C) in the current test and transfer to the next test item, that is, the red-green test. For example, the control unit 60 can perform all the test items planned in the self-refraction of the subject's eye E without terminating a series of tests to the end.

[0149] For example, if reliable test results are not obtained for each test item of the eye to be tested, the test is likely to be prolonged. In the cross-cylinder test (A) of the eye to be tested, this possibility increases, especially when the cylindrical power is weak. Therefore, by comparing the current correction value and the allowable value of the eye to be tested, omitting the test of the specified test item (here, the cross-cylinder test (A)) according to the situation and transferring to the next test, the self-eye test can be carried out smoothly to the end.

[0150] It should be noted that when the cross-cylinder examination (A) of the subject's eye E is omitted and the examination is switched to the cross-cylinder examination (C), an alarm may be displayed on the self-optometry assistance screen 200 in a manner that allows the examiner to understand the omission of the cross-cylinder examination (A).

[0151] Figure 6 This is an example of a self-refraction assistance screen displayed on the monitor 12 of the controller 10 for the examiner. For example, the self-refraction assistance screen 200 includes an operation image area 210, a test result display area 240, and the like. For example, if the self-refraction of the subject's eye E is completed, the test result display area 240 may be displayed instead of the progress display area 230. For example, the test result display area 240 displays a progress result display column 241, a value 244 of the refractive power of the other eye, and a measured value 245 of the optical characteristic (refractive power) of the subject's eye.

[0152] The result display column 241 is a display column showing the execution status of each inspection item for the self-optology of the eye to be inspected. For example, the result display column 241 has inspection items 242, an inspection completion confirmation column 243, etc. For example, the inspection item 242 is a list of inspection items set in the self-optology of the eye to be inspected. As an example, according to the inspection procedure of the self-optology, the red-green inspection (S), the cross-cylinder inspection (A), the cross-cylinder inspection (C), the red-green inspection, and the VA (visual acuity) inspection are summarized. For example, the inspection completion confirmation column 243 is a list of whether the inspection items set in the self-optology of the eye to be inspected have been executed. For example, the inspection completion confirmation column 243 is represented by a check box. For example, if the inspection item is executed, a check mark is placed in the check box, and if the inspection item is not executed, the check mark is removed from the check box. In this embodiment, since the cross-cylindrical examination (A) is omitted in the self-refraction of the subject's eye, only the check box of the examination completion confirmation column 243 corresponding to the cross-cylindrical examination (A) of the examination item 242 becomes a blank. It should be noted that, for example, the examination completion confirmation column 243 may be different from the check box as long as it is a structure that can report to the examiner that the examination item is omitted.

[0153] For example, the value 244 of the refractive power of the other eye and the measured value 245 of the optical characteristic of the eye to be examined are displayed in a comparable manner. As an example, the value 244 of the refractive power of the other eye and the measured value 245 of the optical characteristic of the eye to be examined are displayed side by side. For example, in this embodiment, when the cross cylinder examination (A) of the eye to be examined is omitted and the examination result that is not applicable as the cross cylinder examination (A) is stored in the memory 70, the measured value 245 becomes a blank or an erroneous display.

[0154] It should be noted that, for example, when the correction value immediately before the inspection is terminated is stored in the memory 70 as the inspection result of the cross-cylindrical inspection (A), the correction value may be displayed as the measurement value 245. At this time, the control unit 60 may flash or change the color of the corresponding measurement value 245 in order to allow the inspector to distinguish the correction value displayed as the measurement value 245. Of course, the control unit 60 may also display a message or the like for notifying the inspector that the correction value is being displayed. For example, thereby, the inspector can easily understand that the reliability of the specified measurement value may be low.

[0155] For example, the inspector can check the execution status and measurement value of each inspection item using the inspection result display column 241 and the measurement value 245 of the optical characteristics of the inspected eye in the inspection result display area 240. For example, the inspector can thereby understand that a predetermined inspection item has been omitted and take appropriate actions such as performing a manual inspection as needed.

[0156] As described above, for example, the subjective optometry apparatus of the present embodiment includes: a first acquisition unit that acquires at least one of the front eye data obtained by measuring the optical characteristics of the eye worn by the subject, the heterognostic measurement data obtained by heterognostic measurement of the optical characteristics of the eye to be examined, and the front subjective measurement data obtained by subjectively measuring the optical characteristics of the eye to be examined in the past; a second acquisition unit that acquires the correction value of the eye to be examined corrected by the correction unit when performing optometry; a comparison processing unit that performs comparison processing between the allowable value based on at least one of the front eye data, heterognostic measurement data, and the front subjective measurement data obtained by the first acquisition unit and the correction value obtained by the second acquisition unit; and an output unit that outputs an alarm based on the comparison result of the comparison processing unit. For example, when the correction value of the eye to be examined corrected by the correction unit deviates greatly from the value of the front eye data, heterognostic measurement data, or the front subjective measurement data, it is conceivable that the examination is not performed correctly. However, in self-refraction in which a plurality of examination items for the subject's eye are automatically performed, the examiner is often not beside the subject, and therefore it is difficult for the examiner to confirm whether the examination is being performed correctly. Therefore, for example, by outputting an alarm when the correction value of the subject's eye exceeds the allowable value based on the front eyeglass data, the external sense measurement data, or the front subjective sense measurement data, the examiner can easily confirm the examination status and can smoothly perform the examination.

[0157] In addition, for example, in the subjective refraction device of the present embodiment, the second acquisition unit acquires the correction value at a specified timing during the inspection process of the specified inspection item, the comparison processing unit compares the allowable value and the correction value acquired at the specified timing, and the output unit outputs an alarm during the inspection process of the specified inspection item. For example, in self-refraction that automatically performs multiple inspection items on the inspected eye, the inspector cannot confirm the inspection result unless all the inspection items are completed. Therefore, for example, by setting an allowable value based on the front eyeglass data, the heteronymous measurement data, or the front subjective measurement data acquired by the first acquisition unit, the inspector can easily determine whether the inspection is being carried out without any problems by outputting an alarm at a timing when the correction value acquired by the second acquisition unit during the inspection process exceeds the allowable value.

[0158] In addition, for example, in the subjective optometry device of the present embodiment, the predetermined timing is the timing at which the control unit controls the correction unit to change the optical characteristics of the sight mark beam. For example, this allows the examiner to easily determine the next action, such as to continue the examination as it is, to interrupt the examination, or to re-examine.

[0159] In addition, for example, in the subjective ophthalmometer of the present embodiment, at least one of the front eyeglass data, the heterosensory measurement data, and the front subjective measurement data obtained by the first acquisition unit includes astigmatism axis data, the second acquisition unit obtains at least the astigmatism axis angle as a correction value, and the comparison processing unit compares the allowable value based on the astigmatism axis data and the astigmatism axis angle. For example, in the inspection of the astigmatism axis angle, the subject needs to select any one of the inspection sight marks with different visual effects, and in some cases it is difficult to make this selection, and the inspection result may deviate greatly from the front eyeglass data, the heterosensory measurement data, or the front subjective measurement data. In addition, for example, in the case where the inspection result of the astigmatism axis angle deviates greatly, it may affect the subsequent inspection. As an example, there is a possibility that the appropriate cylinder correction degree cannot be determined in the inspection of the cylinder power, and there is a possibility that the prescribed visual acuity cannot be obtained in the visual acuity test. Therefore, by comparing the allowable value based on the astigmatism axis data obtained by the first acquisition unit and the astigmatism axis angle obtained by the second acquisition unit, the inspector can easily confirm the inspection status.

[0160] In addition, for example, in the subjective optometry device of the present embodiment, the control unit omits a specified inspection item among the multiple inspection items in optometry based on the comparison result of the comparison processing unit, and performs the next inspection item. For example, when multiple inspection items are automatically performed on the inspected eye, it is possible that a reliable inspection result cannot be obtained in the specified inspection item according to the optical characteristics of the inspected eye, and the inspection may continue for a long time. Therefore, for example, by omitting such a specified inspection item and transferring to the next inspection item, the self-optometry can be smoothly performed to the end.

[0161] In addition, for example, in the subjective optometry device of the present embodiment, the control unit does not execute a specified inspection item among a plurality of inspection items in optometry based on the comparison result of the comparison processing unit, and forcibly terminates optometry. For example, in the self-optometry of the subject's eye, when a reliable inspection result cannot be obtained as described above, and an inspection item that lasts for a long time is inspected, the burden on the subject can be reduced by suspending the inspection of the specified inspection item. Moreover, for example, the inspection result of the specified inspection item will affect the inspection result of the subsequent inspection item, so by not implementing the subsequent inspection item, the possibility of obtaining an inspection result with low reliability can be suppressed.

[0162] In addition, for example, in the subjective optometry device of the present embodiment, the prescribed inspection item is an inspection item for obtaining the astigmatism axis angle as the correction value of the eye to be inspected. For example, in the inspection of the astigmatism axis angle, the subject needs to compare the visual effects of two inspection sight marks and select any one of the inspection sight marks. For example, in the case where the cylindrical power of the eye to be inspected is weak, especially when the difference in the visual effects of the inspection sight marks is small, the chance of hesitation in the selection increases. Therefore, it is not easy to obtain an inspection result with high reliability, and sometimes the inspection result is never determined. However, by omitting the inspection item for obtaining the astigmatism axis angle or forcibly ending the inspection item based on the comparison result of the allowable value and the correction value as in the present embodiment, self-optometry can be carried out smoothly.

[0163] <Change example>

[0164] In the subjective optometry device of the present embodiment, the output of an alarm during the process of checking prescribed inspection items in self-optology of the inspected eye is described as an example, but it is not limited to this. For example, an alarm may be output at the time point when the inspection of each inspection item is completed (for example, the inspection result is determined). In addition, for example, an alarm may be output at the time point when all multiple inspection items in the self-optology are completed (that is, all inspection results are obtained). It should be noted that the subjective optometry device of the present embodiment may also be a structure that outputs an alarm at a fixed time during the inspection of prescribed inspection items, at the time point when the inspection of each inspection item is completed, and at the time point when all inspection items are completed.

[0165] For example, in the subjective optometry device of this embodiment, the output unit for outputting an alarm based on the comparison result of the correction value of the eye to be inspected and the allowable value can output the alarm when a plurality of inspection items are completed. For example, by outputting the alarm at the timing when a plurality of inspection items are completed, the inspector can easily determine whether there is no problem with the inspection result.

[0166] In the present embodiment, a structure in which respective permissible values ​​are set uniformly regardless of the values ​​of the spherical power, cylindrical power, and astigmatism axis angle in the external eye refractive power of the eye to be examined is used as an example for explanation, but the present invention is not limited to this. For example, a structure in which different permissible values ​​are set for each spherical power in the external eye refractive power of the eye to be examined. In addition, for example, a structure in which different permissible values ​​are set for each cylindrical power in the external eye refractive power of the eye to be examined. In addition, for example, a structure in which different permissible values ​​are set for each astigmatism axis angle in the external eye refractive power of the eye to be examined.

[0167] For example, in this way, in the subjective optometry device of the present embodiment, the allowable value based on at least any one of the front eyeglass data, the auxiliary measurement data, and the front subjective measurement data acquired by the first acquisition unit is set for each optical characteristic of the front eyeglass data, the auxiliary measurement data, or the front subjective measurement data acquired by the first acquisition unit. For example, the easy deviation of the inspection result varies depending on the magnitude of the absolute value of the optical characteristic based on the front eyeglass data, the auxiliary measurement data, or the front subjective measurement data. Therefore, for example, if the allowable value is set uniformly regardless of the optical characteristic of the front eyeglass data, the auxiliary measurement data, or the front subjective measurement data, there is a possibility that the alarm is frequently output due to a small allowable value, and there is a possibility that the alarm cannot be output even if a deviation occurs due to a large allowable value. Therefore, for example, by setting different allowable values ​​for each optical characteristic of the front eyeglass data, the auxiliary measurement data, or the front subjective measurement data as in the present embodiment, the alarm is appropriately output, so that the inspector can easily determine whether there is no problem with the inspection result.

[0168] In the subjective optometry device of this embodiment, the configuration of setting the allowable value of the astigmatism axis correction amount of the eye to be examined based on the astigmatism axis angle in the refractive power of the other eye of the eye to be examined is described as an example, but the invention is not limited thereto. For example, the allowable value of the astigmatism axis correction amount may also be determined based on the cylindrical power in the refractive power of the other eye of the optometry.

[0169] Figure 7 It is a diagram illustrating the correspondence between the cylindrical power of the eye to be examined and the allowable value of the correction amount of the astigmatism axis of the eye to be examined. For example, a lookup table 71 is established in which the cylindrical power of the eye to be examined and the allowable value of the correction amount of the astigmatism axis of the eye to be examined are correspondingly established by conducting experiments and simulations in advance, and stored in the memory 70. For example, in the lookup table 71, the smaller the absolute value of the cylindrical power of the eye to be examined, the larger the allowable value is set, and the larger the absolute value of the cylindrical power of the eye to be examined, the smaller the allowable value is set. As an example, when the cylindrical power of the eye to be examined is -1.00D and the astigmatism axis angle is 20 degrees, the allowable value of the astigmatism axis correction amount of the eye to be examined is set to 0 degrees to 40 degrees with reference to the lookup table 71. The control unit 60 can detect whether the astigmatism axis correction amount of the subject's eye falls between 0 degrees and 40 degrees through comparison processing. Of course, the above-mentioned lookup table 71 is an example, and it is also possible to arbitrarily add values ​​or change values ​​for the range of cylindrical power in the refractive power of the subject's eye and the allowable value of the astigmatism axis correction amount.

[0170] For example, in the subjective ophthalmometer of the present embodiment, at least one of the front eyeglass data, the heterognostic measurement data, and the front subjective measurement data obtained by the first acquisition unit includes cylindrical data, and the higher the refractive power of the cylindrical data, the more strictly the allowable value is set. For example, the smaller the absolute value of the cylindrical power of the eye to be examined (that is, the lower the refractive power), the less likely it is to feel a difference in the visual effects of the two inspection sight marks in the astigmatism axis inspection, and therefore, the astigmatism axis angle is less likely to be affected by the inspection results accompanied by the axis shift. On the other hand, the larger the absolute value of the cylindrical power of the eye to be examined (that is, the higher the refractive power), the more likely it is to feel a difference in the visual effects of the two inspection sight marks in the astigmatism axis inspection, and therefore, the astigmatism axis angle is easily affected by the inspection results accompanied by the axis shift. Therefore, by setting the allowable value of the astigmatism axis data more strictly as the cylindrical data has a higher refractive power as in the present embodiment, the examiner can easily determine whether the astigmatism axis inspection is carried out without any problem and correctly obtain the inspection results.

[0171] In the subjective optometry device of this embodiment, the self-optometry auxiliary screen (refer to Figure 5 ) is described as an example in which the color of the process 231 in the process display bar 231 is inverted and the alarm mark 234 is displayed on the parameter button 233, but the invention is not limited thereto. For example, a configuration in which either the color inversion of the process 231 or the display of the alarm mark 234 is performed may be used. It should be noted that, instead of or in addition to the color inversion of the process 231 or the display of the alarm mark 234, a report may be made by generating sound or vibration, or an alarm may be output to the inspector by flashing an indicator light or the like.

[0172] It should be noted that the alarm of this embodiment may be different from the above. For example, it may be a structure that performs color inversion, flashing display, etc. of at least one of the arrow 232 displayed to identify the inspection item to be implemented, the process display area 220, etc. In addition, for example, it may be a structure that displays an alarm mark on the inspection item during the process 231, a structure that displays the current correction value next to the inspection item during the process 231, a structure that performs color inversion and flashing display of at least one of the inspection items during the process 231, etc.

[0173] In this embodiment, the case of setting the allowable value based on the refractive power of the subject's eye (heteroscopic measurement data) is described as an example, but it is not limited to this. In this embodiment, the allowable value based on the lens information of the subject's front glasses (front glasses data) can also be set. In addition, the allowable value based on the result of the subjective measurement of the subject's eye obtained in the past (front subjective measurement data) can also be set.

[0174] For example, in the case of setting an allowable value based on pre-subjective measurement data obtained in the past, an allowable value based on the result of a subjective measurement obtained on a date and time different from the current time point of the examination of the eye to be examined can be set. In addition, for example, in the case of setting an allowable value based on pre-subjective measurement data obtained in the past, the allowable value can be set based on the result of a subjective measurement obtained in an examination item performed before a prescribed examination item performed at the current time point among multiple examination items used to examine the eye to be examined. As an example, the allowable value in the second red-green examination can be set based on the result of the first red-green examination. In addition, as an example, the allowable value in the vision test can be set based on the results of the red-green examination and the cross-cylinder examination. That is, the allowable value can be appropriately changed using the examination results obtained by sequentially performing multiple examination items on the eye to be examined.

[0175] In the present embodiment, the configuration in which the control unit 60 of the subjective optometry device 100 obtains the other eye refractive power of the eye to be examined (for example, the data of the other eye measurement) and the correction value of the eye to be examined in the subjective measurement, and the allowable value and the correction value based on the other eye refractive power are compared and processed, and an alarm is output is described as an example, but the present invention is not limited to this. For example, a configuration in which the other eye refractive power and the correction value of the eye to be examined are obtained by a control unit of a medium (for example, a computer, a terminal device, etc.) connected to the main body of the subjective optometry device 100 in a communicable manner, and the allowable value and the correction value based on the other eye refractive power are compared and processed, and an alarm is output. In addition, for example, a configuration in which the control unit 60 of the subjective optometry device 100 performs a comparison process between the allowable value and the correction value based on the other eye refractive power, and an alarm is output by a control unit of the medium connected to the main body of the subjective optometry device 100 in a communicable manner may be used. In this case, for example, the control unit 60 of the subjective optometry device 100 sends a signal to a medium connected to the subjective optometry device in a communicable manner based on the comparison result of the comparison processing unit. For example, the control unit of the medium connected to the subjective optometry device in a communicable manner can output an alarm via the medium by receiving the signal from the control unit 60.

[0176] In the subjective optometry device of the present embodiment, a structure in which the prescribed inspection items are omitted or the self-optology is forcibly terminated and an alarm is outputted is described as an example, but the present invention is not limited thereto. The subjective optometry device of the present embodiment may be a structure in which the prescribed inspection items are omitted or the self-optology is forcibly terminated when the correction amount of the eye to be inspected exceeds the allowable value, and may also be a structure in which an alarm is not necessarily outputted. In this case, for example, the examiner can understand whether the inspection of the prescribed inspection items has been carried out without any problems by comparing the value of the refractive power of the eye to be inspected and the correction value before the inspection of the prescribed inspection items of the eye to be inspected is about to be terminated.

[0177] For example, in this case, the subjective optometry device of the present embodiment may include: a sight mark presenting unit for presenting an inspection sight mark to the inspected eye; a correction unit for changing the optical properties of the sight mark light beam emitted from the sight mark presenting unit; and a control unit for controlling at least one of the sight mark presenting unit and the correction unit based on an answer input by the inspected person, so that optometry including a plurality of inspection items is automatically performed, and the subjective optometry device is used to measure the optical properties of the inspected eye in a subjective manner, wherein the subjective optometry device includes: a first acquisition unit for acquiring front eyeglass data obtained by measuring the optical properties of the glasses worn by the inspected person, and a first acquisition unit for acquiring front eyeglass data obtained by measuring the optical properties of the glasses worn by the inspected person, and a first acquisition unit for measuring the optical properties of the glasses worn by the inspected person in a heteroperceptual manner. The control unit includes: a first acquisition unit for obtaining a correction value of the eye to be examined corrected by the correction unit when performing optometry; a second acquisition unit for obtaining a correction value of the eye to be examined corrected by the correction unit; and a comparison processing unit for comparing the correction value obtained by the second acquisition unit with the allowable value of at least any one of the front eye data, the heterognostic measurement data and the front subjective measurement data obtained by the first acquisition unit, and the control unit omits a specified inspection item from a plurality of inspection items in optometry based on the comparison result of the comparison processing unit and performs the next inspection item.

[0178] In addition, for example, in this case, the subjective optometry device of the present embodiment may include: a sight mark presenting unit for presenting an inspection sight mark to the inspected eye; a correction unit for changing the optical characteristics of the sight mark light beam emitted from the sight mark presenting unit; a control unit for controlling at least one of the sight mark presenting unit and the correction unit based on an answer input by the inspected person, so that optometry including a plurality of inspection items is automatically performed, and the subjective optometry device measures the optical characteristics of the inspected eye in a subjective manner, wherein the subjective optometry device includes: a first acquisition unit for acquiring front eyeglass data obtained by measuring the optical characteristics of the glasses worn by the inspected person, and measuring the optical characteristics of the inspected eye in a heteroperceptual manner. at least any one of the heterognostic measurement data obtained by measuring the optical characteristics of the eye to be examined in a subjective manner in the past; a second acquisition unit that obtains the correction value of the eye to be examined corrected by the correction unit when performing optometry; and a comparison processing unit that compares the allowable value based on at least any one of the front eye data, heterognostic measurement data and front subjective measurement data obtained by the first acquisition unit and the correction value obtained by the second acquisition unit, and the control unit does not execute a specified inspection item among the multiple inspection items in the optometry based on the comparison result of the comparison processing unit, so as to forcibly end the optometry.

[0179] In the subjective optometry device of the present embodiment, the configuration in which the measured value 245 of the optical characteristic of the subject's eye is blank or displayed in error when the correction amount based on the correction of the subject's eye exceeds the allowable value based on the refractive power of the other eye is described as an example, but the present invention is not limited to this. In the subjective optometry device of the present embodiment, when the correction amount of the subject's eye exceeds the allowable value, at least one of the optical characteristic of the eyeglass lens worn by the subject (i.e., the previous eyeglass data), the value of the refractive power of the other eye of the subject's eye (i.e., the other-eye measurement data), and the measurement result of the subject's past subjective measurement (i.e., the previous subjective measurement data) may be displayed as the measured value 245 of the optical characteristic of the subject's eye. For example, in this case, it may be set so that one or more of the previous eyeglass data, the other-eye measurement data, and the previous subjective measurement data are displayed in advance. In addition, for example, in this case, it may be possible to arbitrarily select and display one or more of the previous eyeglass data, the other-eye measurement data, and the previous subjective measurement data.

[0180] For example, in the subjective refraction device of the present embodiment, when the prescribed inspection item in the refraction is omitted or the refraction is forcibly terminated, the control unit obtains at least any one of the front eyeglass data, the heteronosic measurement data, and the front subjective measurement data as the inspection result of the prescribed inspection item. For example, when the prescribed inspection item is omitted, a highly reliable inspection result cannot be obtained in the prescribed inspection item. In addition, for example, when the refraction is forcibly terminated, a highly reliable inspection result cannot be obtained in the prescribed inspection item, and since the inspection items after the prescribed inspection item are not implemented, there is a state where there is no inspection result. Therefore, for example, by obtaining at least any one of the front eyeglass data, the heteronosic measurement data, and the front subjective measurement data of the subject's eye as reference data for the inspection result in the prescribed inspection item, the inspector can easily grasp the optical characteristics of the subject's eye.

[0181] Description of Reference Numerals

[0182] 1 Housing

[0183] 2 Presentation Window

[0184] 3 Speakers

[0185] 10 Inspector Controller

[0186] 20 Controller for subject

[0187] 30 Light projection optical system

[0188] 40 Eye Refractive Power Measurement Unit

[0189] 43 Inspection window

[0190] 60 Control Department

[0191] 100 Subjective refraction device.

Claims

1. A subjective optometry device, comprising: an optotype presenting unit for presenting an inspection optotype to an eye to be inspected; A correction unit, which changes the optical properties of the sight mark light beam emitted from the sight mark presenting unit; as well as The control unit controls at least one of the sight mark presenting unit and the correction unit based on the answer input by the subject, so that the optometry including a plurality of examination items is automatically performed. The subjective optometry device is used to measure the optical characteristics of the eye to be examined in a subjective manner. The subjective optometry device is characterized by comprising: a first acquisition unit that acquires at least any one of front eyeglass data obtained by measuring the optical characteristics of the eyeglasses worn by the subject, heterosthenic measurement data obtained by heterosthenic measurement of the optical characteristics of the eye to be examined, and front subjective measurement data obtained in the past by subjective measurement of the optical characteristics of the eye to be examined; a second obtaining unit, which obtains a correction value of the eye to be examined by the correction unit when performing the optometry; a comparison processing unit that performs comparison processing on an allowable value based on at least any one of the front eyeglass data, the heteronormative measurement data, and the front subjective measurement data acquired by the first acquisition unit and the correction value acquired by the second acquisition unit; as well as An output unit outputs an alarm based on the comparison result of the comparison processing unit.

2. The subjective optometry device according to claim 1, characterized in that: The second acquisition unit acquires the correction value at a predetermined timing during the inspection of a predetermined inspection item. The comparison processing unit performs comparison processing on the allowable value and the correction value acquired at the predetermined timing, The output unit outputs the alarm during the inspection of the predetermined inspection item.

3. The subjective optometry device according to claim 2, characterized in that: The predetermined timing is a timing at which the control unit changes the optical characteristics of the sight mark beam every time the control unit controls the correction unit.

4. The subjective optometry device according to any one of claims 1 to 3, characterized in that: The output unit outputs the alarm when the plurality of inspection items are completed.

5. The subjective optometry device according to any one of claims 1 to 4, characterized in that: The allowable value is set for each optical characteristic of the front eyeglass data, the heterosthenic measurement data, or the front subjective measurement data acquired by the first acquisition unit.

6. The subjective optometry device according to any one of claims 1 to 5, characterized in that: At least any one of the front eyeglass data, the heteronormative measurement data, and the front subjective measurement data acquired by the first acquisition unit includes astigmatism axis data, The second acquisition unit acquires at least the astigmatism axis angle as the correction value, The comparison processing unit performs comparison processing between the allowable value based on the astigmatism axis data and the astigmatism axis angle.

7. The subjective optometry device according to claim 6, characterized in that: At least any one of the front eyeglass data, the heterosthenic measurement data, and the front subjective measurement data acquired by the first acquisition unit includes cylindrical lens data, The higher the refractive power of the cylindrical lens data is, the stricter the allowable value is set.

8. The subjective optometry device according to any one of claims 1 to 7, characterized in that: The control unit omits a predetermined inspection item among the plurality of inspection items in the optometry based on the comparison result of the comparison processing unit and performs the next inspection item.

9. The subjective optometry device according to any one of claims 1 to 8, characterized in that: The control unit forcibly ends the optometry without executing a predetermined inspection item among the plurality of inspection items in the optometry based on the comparison result of the comparison processing unit.

10. The subjective optometry device according to claim 8 or 9, characterized in that: The control unit obtains at least any one of the front eyeglass data, the heterosthenic measurement data, and the front subjective measurement data as an inspection result of the predetermined inspection item when the predetermined inspection item in the optometry is omitted or the optometry is forcibly terminated.

11. The subjective optometry device according to any one of claims 8 to 10, characterized in that: The predetermined examination item is an examination item for obtaining the astigmatism axis angle as the correction value of the eye to be examined.

12. A subjective optometry program, used in a subjective optometry device, the subjective optometry device comprising: an optotype presenting unit for presenting an inspection optotype to an eye to be inspected; A correction unit, which changes the optical properties of the sight mark light beam emitted from the sight mark presenting unit; as well as The control unit controls at least one of the sight mark presenting unit and the correction unit based on the answer input by the subject, so that the optometry including a plurality of examination items is automatically performed. The subjective optometry device is used to measure the optical characteristics of the eye to be examined in a subjective manner. The subjective refraction procedure is characterized by: The processor of the subjective optometry device executes the subjective optometry program so that the subjective optometry device performs: A first acquisition step of acquiring at least one of front eyeglass data obtained by measuring the optical characteristics of the eyeglasses worn by the subject, heterognostic measurement data obtained by heterognostic measurement of the optical characteristics of the eye to be examined, and front subjective measurement data obtained in the past by subjective measurement of the optical characteristics of the eye to be examined; A second obtaining step of obtaining a correction value of the eye to be examined by the correction unit when performing the optometry; a comparison processing step of comparing an allowable value based on at least any one of the front eyeglass data, the heteronormative measurement data, and the front subjective measurement data acquired in the first acquisition step with the correction value acquired in the second acquisition step; as well as The output step is to output an alarm based on the comparison result of the comparison processing step.

13. The subjective refraction procedure according to claim 12, characterized in that: The control unit omits a predetermined inspection item among the plurality of inspection items in the optometry based on the comparison result of the comparison processing step and performs the next inspection item.

14. The subjective refraction procedure according to claim 13, characterized in that: The control unit forcibly ends the optometry without executing a predetermined inspection item among the plurality of inspection items in the optometry based on the comparison result of the comparison processing step.

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