Subjective optometry system and subjective optometry program

Abstract

This subjective optometry system for subjectively measuring optical characteristics of a subject's eye comprises: a visual target presentation means that presents a test visual target to the subject's eye; a corrective means that changes optical characteristics of a light flux emitted from the visual target presentation means; a self-optometry program setting means that sets either a first self-optometry program for automatically causing a subject to proceed through a plurality of test items for the subject's eye on the basis of an inputted response, and a second self-optometry program that is for automatically causing the subject to proceed through a plurality of test items for the subject's eye on the basis of an inputted response and that uses a test condition different from that for the first self-optometry program; and a control means that controls the visual target presentation means and / or the corrective means on the basis of the first or second self-optometry program set by the self-optometry program setting means, to cause optometry to proceed in accordance with the procedure of the first optometry program or the second optometry program.

Description

Subjective optometry system and subjective optometry program

[0001] The present disclosure relates to a subjective optometry system and a subjective optometry program for subjectively measuring optical characteristics of a subject's eye.

[0002] A subjective optometry system uses a subjective optometry device that subjectively measures the optical characteristics of the subject's eye. For example, the subjective optometry device can measure the optical characteristics of the subject's eye by placing an optical element in front of the subject's eye and presenting a visual target to the subject's eye via the optical element. For example, a subjective optometry device is used for self-eye examination, in which the subject conducts a subjective examination by himself or herself (see Patent Document 1).

[0003] Japanese Patent Application Laid-Open No. 2022-89255

[0004] In self-eye examinations using such subjective eye examination devices, the examination proceeds according to a self-eye examination program that takes into account the examination conditions necessary for the self-eye examination to proceed smoothly. However, the examination conditions of the subject's eye (e.g., the examiner's level of experience, the optical characteristics of the subject's eye, etc.) and the operating conditions of the facility or store where the device is installed (e.g., the congestion level, the examination schedule, etc.) vary, and there are cases in which a preset self-eye examination program is not suitable.

[0005] In view of the above problems, the technical objective of the present disclosure is to provide a subjective eye examination system and a subjective eye examination program that can easily execute a self-eye examination program suitable for the situation in which self-eye examination is performed on the subject's eye.

[0006] A subjective eye examination system according to a first aspect of the present disclosure is a subjective eye examination system for subjectively measuring the optical characteristics of a subject's eye, and is characterized by comprising: an eye test target presenting means for presenting a test target to the subject's eye; a corrective means for changing the optical characteristics of the eye test target light beam emitted from the eye test target presenting means; a self-eye examination program setting means for setting either a first self-eye examination program for automatically progressing through a plurality of test items for the subject's eye based on answers input by the subject; or a second self-eye examination program for automatically progressing through a plurality of test items for the subject's eye based on answers input by the subject, the second self-eye examination program having different test conditions from the first self-eye examination program; and a control means for controlling at least one of the eye test target presenting means and the corrective means based on the first self-eye examination program or the second self-eye examination program set by the self-eye examination program setting means, and for progressing the eye examination in accordance with the procedures of the first self-eye examination program or the second self-eye examination program.

[0007] A subjective eye examination program according to a second aspect of the present disclosure includes an eye test target presenting means for presenting a test target to the eye to be examined, and a corrective means for changing the optical characteristics of the eye test target light beam emitted from the eye test target presenting means, and is used in a subjective eye examination system for subjectively measuring the optical characteristics of the eye to be examined, and is characterized by executing a self-eye examination program setting step for setting either a first self-eye examination program that automatically progresses through a plurality of test items for the eye to be examined based on answers input by the subject, or a second self-eye examination program that automatically progresses through a plurality of test items for the eye to be examined based on answers input by the subject, the second self-eye examination program having different test conditions from the first eye examination program; and a control step for controlling at least one of the eye test target presenting means and the corrective means based on the first self-eye examination program or the second self-eye examination program set in the self-eye examination program setting step, and progressing the eye examination in accordance with the procedures of the first self-eye examination program or the second self-eye examination program.

[0008] 1 is an external view of the eye refractive power measurement unit supported in a standby position. FIG. 2 is an external view of the eye refractive power measurement unit supported in a measurement position. FIG. 3 is a schematic view showing the optical arrangement of the light projection optical system during a distance test. FIG. 4 is a schematic view showing the optical arrangement of the light projection optical system during a near test. FIG. 5 is a diagram showing a polarizing optical member. FIG. 6 is a schematic view of the eye refractive power measurement unit. FIG. 7 is a schematic view of the control system of the subjective eye examination device. FIG. 8 is an example of a self-eye examination auxiliary screen when a first self-eye examination program is set. FIG. 9 is an example of a self-eye examination auxiliary screen when a second self-eye examination program is set. FIG. 10 is a diagram showing how a polarized red-green optotype appears to both eyes. FIG. 11 is a diagram showing how a polarized red-green optotype appears to the left eye. FIG. 12 is a diagram showing how a polarized red-green optotype appears to the right eye. FIG. 13 is an example of a self-eye examination auxiliary screen in a second embodiment. FIG. 14 is an example of a schedule setting screen in a second embodiment. FIG. 15 is an example of a self-eye examination program selection screen in a second embodiment. FIG. 16 is an example of a self-eye examination auxiliary screen for editing a self-eye examination program. FIG. 17 is an example of a self-eye examination program selection screen. FIG. 18 is an example of a self-eye examination program editing screen. FIG. 1 is a diagram showing a plurality of subjective optometry devices connected to a network via terminal devices.

[0009] <Overview> An overview of the subjective optometry system according to this embodiment will be described. Note that the items grouped in < > below can be used independently or in association with each other.

[0010] The subjective optometry system of this embodiment is a system for subjectively measuring optical characteristics of the subject's eye. For example, the optical characteristics of the subject's eye may be ocular refractive power (e.g., at least one of spherical power, cylindrical power, and astigmatic axis angle), binocular vision function (e.g., at least one of prism amount and stereoscopic vision function), contrast sensitivity, etc.

[0011] The subjective optometry system of this embodiment may include a target presenting means (e.g., 31). The target presenting means presents a test target to the subject's eye. For example, the target presenting means presents the test target to the subject's eye by emitting a target light beam toward the subject's eye.

[0012] For example, the target light beam from the target presenting means may be guided directly toward the subject's eye. Alternatively, for example, the target light beam from the target presenting means may be guided toward the subject's eye via a light projection optical system (e.g., the light projection optical system 30). For example, the light projection optical system may have at least one optical element through which the target light beam emitted from the target presenting means passes. For example, the light projection optical system may have at least one optical element such as a lens, a mirror, or the like.

[0013] The subjective optometry system of this embodiment may include a correction means. The correction means changes the optical characteristics of the target light beam emitted from the target presenting means. For example, the correction means may be disposed in the optical path of the light projection optical system and change the optical characteristics of the target light beam.

[0014] The corrective means may be configured to change the optical characteristics of the target light beam.

[0015] For example, the correction means may have 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 cylinder lens, a rotary prism, a wavefront modulation element, etc. Of course, the optical element may be different from these. In this case, the optical characteristics of the target light beam are changed by controlling the optical element.

[0016] Furthermore, for example, the correcting means may have a configuration for optically changing the presentation position (presentation distance) of the optotype relative to the eye to be examined. As an example, the correcting means may have a configuration for moving the optotype presenting means in the optical axis direction, or may have a configuration for moving an optical element (e.g., a spherical lens) in the optical path in the optical axis direction. In this case, the optical characteristics of the optotype light beam are changed by controlling a driving means for controlling at least one of the optotype presenting means and the optical element.

[0017] Furthermore, for example, the correcting means may be an eye refraction measurement unit (e.g., eye refraction measurement unit 40) that switches and positions an optical element (e.g., optical element 52) ​​in front of the subject's eye via an examination window (e.g., examination window 43). For example, the eye refraction measurement unit may have a lens disk (e.g., lens disk 50) on which multiple optical elements are arranged on the same circumference. In this case, the optical characteristics of the visual target light beam are changed by controlling a driving means (e.g., driving unit 51, driving unit 53, etc.) for controlling the lens disk.

[0018] The subjective eye examination system of this embodiment may include a self-eye examination program setting means (e.g., the control unit 60). The self-eye examination program setting means sets either a first self-eye examination program that automatically progresses through multiple test items for the subject's eye based on answers input by the subject, or a second self-eye examination program that automatically progresses through multiple test items for the subject's eye based on answers input by the subject, the second self-eye examination program having different test conditions from the first self-eye examination program. For example, the test items may be items indicating the type of test to be performed in the subjective test of the subject's eye. For example, the test items may be items provided for each type of optical characteristic of the subject's eye, and may be items for obtaining test results for a predetermined optical characteristic of the subject's eye.

[0019] The subjective eye examination system may also include a selection means for selecting and setting a self-eye examination program. For example, the selection means may be configured to enable selection of either the first self-eye examination program or the second self-eye examination program. Examples of the selection means include at least one of a check button, a radio button, a pull-down menu, and a selection switch provided on the device housing. This allows the examiner to set any self-eye examination program.

[0020] For example, in this embodiment, the difference in the test conditions between the first self-eye examination program and the second self-eye examination program may be at least one of a difference in conditions related to the test items, a difference in conditions related to the test optotype, etc. Of course, a combination of differences in conditions related to the test items and the test optotype may also be used.

[0021] For example, the difference in the conditions for the test items between the first self-eye examination program and the second self-eye examination program may be at least one of the differences, such as the test items to be performed in each self-eye examination program, the order in which multiple test items are performed, or the parameters for determining the test results for a specified test item (for example, the highest visual acuity value of the test eye, etc.).

[0022] For example, the first self-eye examination program and the second self-eye examination program may have different test items. That is, the first self-eye examination program and the second self-eye examination program may have different combinations of test items. For example, the first self-eye examination program and the second self-eye examination program may all have different test items. Furthermore, for example, at least one test item among the first self-eye examination program and the second self-eye examination program may be the same. As an example, in this case, the second self-eye examination program may be configured to include test items different from the test items included in the first self-eye examination program in addition to the test items included in the first self-eye examination program. This allows a self-eye examination program to be easily configured to correspond to the type of eyeglasses desired by the subject, the examination conditions of the subject's eye (e.g., the examiner's experience level and the optical characteristics of the subject's eye), the operating conditions of the facility or store where the subjective eye examination system is installed (e.g., busy times and dates), etc., and each test item can be progressed.

[0023] Furthermore, for example, the difference in the conditions related to the test optotypes between the first self-eye examination program and the second self-eye examination program may be at least one of the differences in the number of test optotypes used in the test items included in each self-eye examination program, the type of test optotype (for example, a Landolt ring optotype and a tumbling E optotype, etc.), the display format of the visual acuity value of the test optotype (for example, a decimal display and a logarithmic display, etc.), etc. Note that the difference in the test conditions between the first eye examination program and the second self-eye examination program may also include a difference in the content of the audio guide that accompanies such differences in the conditions related to the test items and test optotypes.

[0024] For example, the first self-eye examination program and the second self-eye examination program may use different test optotypes for the examination items. In other words, the first self-eye examination program and the second self-eye examination program may use different test optotypes for the examination items that are common to both programs. For example, when examining the subject's eye, the type of test optotype or the display format of the visual acuity value may be changed to suit the country or region where the subjective eye examination system is installed, or the number and type of test optotypes may be changed depending on the examination conditions of the subject's eye. As in this embodiment, by providing multiple self-eye examination programs with different test optotypes in advance, the self-eye examination program can be switched as needed to perform the examination smoothly.

[0025] In this embodiment, the plurality of test items included in each self-eye examination program may include a test item for testing the visual acuity of the subject's eye. For example, the test items may be a naked eye visual acuity test for testing the naked eye visual acuity of the subject's eye, a corrected visual acuity test for testing the corrected visual acuity of the subject's eye, etc.

[0026] In this embodiment, the multiple test items included in each self-eye examination program may include a test item for testing the refractive power of the subject's eye. For example, they may include at least one of a spherical test for testing the spherical refractive power of the subject's eye, a cylindrical test for testing the cylindrical refractive power of the subject's eye, an astigmatic axis test for testing the astigmatic axis angle of the subject's eye, etc. Of course, they may include all of the spherical test, cylindrical test, and astigmatic axis test.

[0027] In this embodiment, the multiple test items included in each self-eye examination program may include test items for testing the binocular vision function of the subject's eye. For example, they may include at least one of a binocular accommodation balance test for testing the accommodation balance of the subject's eye, a heterophoria test for testing the heterophoria of the subject's eye, a strabismus test for testing the heterophoria of the subject's eye, a convergence test for testing the convergence of the subject's eye, a fusion test for testing the fusion of the subject's eye, and a stereopsis test for testing the stereopsis of the subject's eye. Of course, all of the binocular accommodation balance test, heterophoria test, strabismus test, convergence test, fusion test, and stereopsis test may be included.

[0028] The multiple test items included in each self-eye examination program may be a combination of at least one of test items for testing the visual acuity of the subject's eye, test items for testing the refractive power of the subject's eye, test items for testing the binocular vision function of the subject's eye, etc. Of course, all of these test items may be included.

[0029] In this embodiment, the first self-eye examination program may include, as the multiple examination items, an examination item for testing the refractive power of the subject's eye, and the second self-eye examination program may include, as the multiple examination items, an examination item for testing the binocular vision function of the subject's eye in addition to the examination item for testing the refractive power of the subject's eye. For example, the examination item for testing the refractive power of the subject's eye is a general examination item. For example, an examination item for testing the refractive power is performed when preparing eyeglasses for the subject's eye. Therefore, by setting the first self-eye examination program, it is possible to efficiently accommodate a large number of subjects. Furthermore, for example, the examination item for testing the binocular vision function of the subject's eye is an examination item performed when it is desired to understand the optical characteristics of the subject's eye. Therefore, by setting the second self-eye examination program, it is possible to prepare eyeglasses that are more optimal for the subject's eye using the test results of the refractive power and visual function of the subject's eye.

[0030] The subjective eye examination system of this embodiment may include a control unit (e.g., a control unit 60). The control unit controls at least one of the optotype presenting unit and the correction unit based on the first or second self-eye examination program set by the self-eye examination program setting unit, and progresses the eye examination in accordance with the procedures of the first or second self-eye examination program. For example, the control unit may control the optotype presenting unit to change at least one of the type of test optotype displayed on the optotype presenting unit, the visual acuity value of the test optotype, etc., based on the first or second self-eye examination program. Furthermore, for example, the control unit may control the correction unit to change at least one of the correction power for correcting the subject's eye, the arrangement of the optical elements, etc., based on the first or second self-eye examination program. This allows the examination to proceed smoothly according to a program selected in accordance with the type of eyeglasses desired by the subject, the examination status of the subject's eye, the operating status of the facility or store where the subjective eye examination system is installed, etc.

[0031] The subjective eye examination system of this embodiment may include a setting change unit (e.g., the control unit 60). For example, the setting change unit changes at least one of the test conditions of the first self-eye examination program and the test conditions of the second self-eye examination program. That is, for example, by using the setting change unit, it is possible to customize at least one of the test conditions of the first self-eye examination program and the test conditions of the second self-eye examination program. For example, the setting change unit may be configured to change only the first test conditions (first test conditions) of the first self-eye examination program and the initial test conditions of the second self-eye examination program (second test conditions). Of course, for example, the setting change unit may be configured to change both the first test conditions and the second test conditions. For example, the test conditions of the first self-eye examination program and the second self-eye examination program provided in the subjective eye examination system may not be suitable for some subjects. Therefore, by changing the test conditions using the setting change unit, the examination can proceed smoothly under the desired test conditions.

[0032] The subjective eye examination system of this embodiment may also include an eye examination schedule setting means (e.g., the control unit 60). The eye examination schedule setting means sets an eye examination schedule that associates the first self-eye examination program and the second self-eye examination program with a predetermined period. For example, the predetermined period may be a regular period, such as a predetermined date or a predetermined time (e.g., morning and afternoon, a time slot specified by the examiner, etc.). Furthermore, for example, the predetermined period may be a regular period based on calendar information such as days of the week, weeks, or months. This allows the eye examination schedule to be set according to the operational status of the facility or store where the subjective eye examination system is installed. In such a case, for example, the aforementioned self-eye examination program setting means switches between the first self-eye examination program and the second self-eye examination program based on the eye examination schedule set by the eye examination schedule setting means. Automatic switching between the respective self-eye examination programs at predetermined intervals allows for smooth eye examinations.

[0033] The subjective optometry system of this embodiment may include an operating means (e.g., examiner controller 10). The operating means inputs an operating signal for setting at least one of the first self-eye examination program and the second self-eye examination program. In this case, the eye examination schedule setting means sets an eye examination schedule that associates the first self-eye examination program and the second self-eye examination program with a predetermined period based on the operating signal from the operating means. This allows, for example, a manager of a facility or store where the subjective optometry system is installed, or an examiner who uses the subjective optometry system, to set an optimal eye examination schedule for each facility or store.

[0034] Of course, for example, the operation signal for setting the eye examination schedule may be input by receiving an operation signal from a management medium (e.g., a computer) that manages the subjective eye examination system. Furthermore, for example, the operation signal for setting the eye examination schedule may be input by using an external storage means (e.g., an SD card, a USB memory, a server, the cloud, etc.). In this case, the control means included in the subjective eye examination system may read the eye examination schedule settings stored in the external storage means and input an operation signal corresponding to the settings. For example, when using such a management medium or external storage means, it is possible to easily standardize the contents of the first and second self-eye examination programs, the contents of the eye examination schedule, etc., in facilities or stores that introduce subjective eye examination systems.

[0035] The present disclosure is not limited to the devices described in the present embodiment. For example, terminal control software (programs) that perform the functions of the above embodiments may be supplied to a system or device via a network or various storage media, and a control device (e.g., a CPU) of the system or device may read and execute the program.

[0036] First Example A first example of a subjective optometry system according to this embodiment will be described. In this example, a subjective optometry device for subjectively measuring the optical characteristics of a subject's eye is exemplified as the subjective optometry system, which is integrally provided with a display that displays a test target on the subject's eye and an eye refractive power measurement unit that changes the optical characteristics of the target light beam emitted from the display. Of course, for example, the display may be provided as a separate housing from the subjective optometry device.

[0037] 1A and 1B are external views of a subjective optometry device 100. Fig. 1A shows a state in which the eye refractive power measurement unit 40 is supported in a standby position. Fig. 1B shows a state in which the eye refractive power measurement unit 40 is supported in a measurement position. 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, the eye refractive power measurement unit 40, etc.

[0038] The housing 1 has a light projection optical system 30 inside. The presentation window 2 transmits a visual target light beam emitted by the light projection optical system 30. The visual target light beam is projected onto the subject's eye E through the presentation window 2. When an eye refractive power measuring unit 40 is disposed between the subject's eye E and the presentation window 2 (see FIG. 1B ), the visual target light beam is projected onto the subject's eye E through the presentation window 2 and a test window 43 (described later). This presents a test visual target to the subject's eye E. The speaker 3 outputs audio guidance and the like.

[0039] The holding unit 4 holds the eye refractive power measurement unit 40. For example, the holding unit 4 moves an arm by driving a drive unit (motor or the like) not shown, thereby moving the eye refractive power measurement unit 40 connected to the arm. This allows the eye refractive power measurement unit 40 to be switched between a standby position and a measurement position.

[0040] The examiner's controller 10 is used by the examiner to operate the subjective ophthalmology device 100. The examiner's controller 10 includes a switch unit 11, a monitor 12, and the like. The switch unit 11 inputs signals for performing various settings (e.g., movement of the eye refractive power measurement unit 40, etc.). The monitor 12 displays a self-eye examination auxiliary screen, which will be described later. For example, the self-eye examination auxiliary screen may display various information (e.g., examination results of the subject's eye E, etc.). The monitor 12 may also function as a touch panel that doubles as the switch unit 11. Signals from the examiner's controller 10 are output to the control unit 60 via wired or wireless communication.

[0041] The subject controller 20 is used to input the subject's answers. The subject controller 20 includes an answer lever 21, an answer button 22, and the like. The answer lever 21 is used by the subject when inputting a direction relative to the test optotype. For example, signals for four directions, up, down, left, and right, can be input by tilting the lever. The answer button 22 is used when the subject does not select a direction relative to the test optotype. Signals from the subject controller 20 are output to the control unit 60 via wired or wireless communication.

[0042] 2A and 2B are schematic diagrams of the light-projecting optical system 30. Fig. 2A shows the optical arrangement during a distance test. Fig. 2B shows the optical arrangement during a near test. The light-projecting optical system 30 projects a visual target light beam toward the subject's eye E. For example, the light-projecting optical system 30 includes a display 31, a plane mirror 32, a concave mirror 33, a near / far switcher 34, and the like.

[0043] The display 31 displays a visual target (e.g., a fixation target, a test visual target, etc.). A visual target light beam emitted from the display 31 forms an image on the fundus of the subject's eye E, thereby presenting the visual target to the subject's eye E. For example, the display 31 may be an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), a plasma display, etc.

[0044] The display 31 may include a polarizing optical element. For example, a polarizing optical element may be disposed in front of the display 31, or a polarizing optical element may be incorporated into the display 31 and disposed integrally therewith. This allows the display 31 to emit linearly polarized light having a polarization axis in a predetermined direction (vertical, horizontal, or 45-degree diagonal, etc.). In this embodiment, the display 31 emits a visual target light beam having a polarization axis in the vertical direction (the polarization axis indicated by the arrow 50Y in FIG. 3 ).

[0045] FIG. 3 is a diagram illustrating the polarizing optical member 15. For example, the polarizing optical member 15 has left-eye optical regions 57L and right-eye optical regions 59R that are alternately arranged in a line or grid pattern on the front surface of the display 31. Of the pixels P of the display 31, the left-eye optical regions 57L are arranged corresponding to the first pixel regions A1 of at least two adjacent pixels, and the right-eye optical regions 59R are arranged corresponding to the second pixel regions A2 of at least two adjacent pixels. In this embodiment, the left-eye optical regions 57L and the right-eye optical regions 59R are alternately arranged adjacent to each other in a horizontal line having a width of two pixels on the display 31. In addition, in this embodiment, the left-eye optical regions 57L and the right-eye optical regions 59R coincide (or substantially coincide) with the horizontal line-shaped pixel regions A (pixel regions A1 and A2) on the display 31 that are two pixels wide.

[0046] The polarization optical member 15 converts a visual target light beam emitted from the display 31 and passing through the optical region 57L for the left eye and a visual target light beam emitted from the display 31 and passing through the optical region 59R for the right eye into visual target light beams having polarization axes perpendicular to each other. For example, in this embodiment, the visual target light beam emitted from the display 31 and passing through the optical region 57L for the left eye is converted into linearly polarized light having a polarization axis in the 45-degree direction, and the visual target light beam passing through the optical region 59R for the right eye is converted into linearly polarized light having a polarization axis in the 135-degree direction.

[0047] For example, polarizing lenses 54L and 54R (described below) included in the eye refractive power measurement unit 40 have polarization axes at 45 degrees and 135 degrees, respectively. Therefore, when the subject's eyes observe a visual target through polarizing lenses 54L and 54R, only the visual target light beam from left-eye optical region 57L passes through polarizing lens 54L and reaches the left eye, and only the visual target light beam from right-eye optical region 59R passes through polarizing lens 54R and reaches the right eye. This makes it possible to separate the test visual targets for the left and right eyes, and different test visual targets are presented to the left and right eyes.

[0048] The plane mirror 32 reflects the visual target light beam from the display 31 and guides it to the concave mirror 33. The plane mirror 32 also reflects the visual target light beam from the display 31 and guides it to the subject's eye E. For example, the plane mirror 32 is positioned so that the distance (presentation distance) from the subject's eye E to the display 31 during a near vision test of the subject's eye E is optically 40 cm. Note that instead of the plane mirror 32, it is also possible to use a reflecting member such as a prism, a beam splitter, or a half mirror.

[0049] The concave mirror 33 reflects the visual target light beam from the display 31 and guides it to the plane mirror 32. For example, the concave mirror 33 is positioned so that the distance (presentation distance) from the subject's eye E to the display 31 during a distance test of the subject's eye E is optically 5 m. Note that instead of the concave mirror 33, it is also possible to use a reflective member such as an aspherical mirror or a free-form mirror. It is also possible to use a lens or the like instead of the concave mirror 33.

[0050] The distance switching unit 34 switches the position of the display 31 between a distance test and a near test of the subject's eye E. For example, the distance switching unit 34 moves the holder by driving a drive unit (motor or the like) not shown, thereby moving the display 31 held by the holder. This allows the display 31 to be switched between a distance position and a near position.

[0051] For example, during a distance vision test of the subject's eye E, the display screen of the display 31 is directed toward the rear of the housing 1 (see FIG. 2A ). The visual target light beam from the display 31 passes through the optical axis L1 and is incident on the plane mirror 32, where it is reflected in the direction of the optical axis L2. The visual target light beam also passes through the optical axis L2 and is incident on the concave mirror 33, where it is reflected in the direction of the optical axis L3. The visual target light beam also passes through the optical axis L3 and is reflected in the direction of the optical axis L4 by the plane mirror 32. As a result, the visual target light beam that has passed through each optical member inside the housing 1 and is emitted to the outside of the housing 1 is projected onto the subject's eye E.

[0052] For example, during a near vision test of the subject's eye E, the display screen of the display 31 is directed toward the top surface of the housing 1 (see FIG. 2B). The visual target light beam from the display 31 passes through the optical axis L3 and enters the plane mirror 32, and is reflected by the plane mirror 32 in the direction of the optical axis L4. As a result, the visual target light beam that has passed through each optical member inside the housing 1 and is emitted to the outside of the housing 1 is projected onto the subject's eye E.

[0053] <Eye Refractive Power Measurement Unit (Corrective Optical System)> Fig. 4 is a schematic diagram of the eye refractive power measurement unit 40. The eye refractive power measurement unit 40 subjectively measures the refractive power of the subject's eye E. The eye refractive power measurement unit 40 is also used as a corrective optical system. The corrective optical system is disposed in the optical path of the light projection optical system 30, and changes the optical characteristics of the visual target light beam. For example, the eye refractive power measurement unit 40 includes a forehead rest 41, a lens unit 42, an examination window 43, a moving unit 44, and the like.

[0054] The forehead rest 41, against which the subject's head rests, fixes the subject's eye E at a predetermined examination position and maintains a constant distance from the subject's eye E to the examination window 43. The lens unit 42 has a pair of left and right lens units 42L and 42R. The lens unit 42 has examination windows 43 (left examination window 43L and right examination window 43R).

[0055] The moving unit 44 adjusts the distance between the left lens unit 42L and the right lens unit 42R and the convergence angle (inward angle) between the left lens unit 42L and the right lens unit 42R. For example, the moving unit 44 adjusts the distance between the left lens unit 42L and the right lens unit 42R by driving a driving unit 45 (left driving unit 45L and right driving unit 45R). Also, for example, the moving unit 44 adjusts the convergence angle between the left lens unit 42L and the right lens unit 42R by driving a driving unit 46. For a detailed configuration of the moving unit 44, see, for example, Japanese Patent Application Laid-Open No. 2004-329345.

[0056] The lens unit 42 includes a lens disk 50 therein. The lens disk 50 has a pair of left and right lens disks, a left lens disk 50L and a right lens disk 50R. The lens disk 50 is rotated by driving a drive unit 51 (a left drive unit 51L and a right drive unit 51R). The lens disk 50 also has an aperture (or a 0D lens) and multiple optical elements 52 (a left optical element 52L and a right optical element 52R) arranged on the same circumference. These optical elements are rotated by driving a drive unit 53 (a left drive unit 53L and a right drive unit 53R). This allows the desired optical element 52 to be switched and positioned in the inspection window 43 at the desired angle.

[0057] The lens disk 50 may consist of one lens disk or multiple 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 multiple spherical lenses with different spherical powers (spherical refractive powers). As an example, the cylindrical lens disk may have multiple cylindrical lenses with different cylindrical powers (cylindrical refractive powers). As an example, the auxiliary lens disk may have a shielding plate, polarizing lenses (polarizing lenses 54L and 54R), red filters / green filters, a dispersion prism, a Maddox lens, a rotary prism, a cross cylinder lens, an autocross cylinder lens, an alignment lens, etc. The driving units 51 and 53 may be provided for each lens disk.

[0058] The eye refractive power measurement unit 40 may be configured to change the optical characteristics of the visual target light beam. For example, as in this embodiment, it may be configured to control an optical element. Alternatively, it may be configured to control a wavefront modulation element.

[0059] <Controller> Fig. 5 is a schematic diagram of the control system of the subjective optometry device 100. For example, the controller 60 includes a CPU (processor), RAM, ROM, etc. For example, the CPU controls each component in the subjective optometry device 100. For example, the RAM temporarily stores various types of information. For example, the ROM stores various programs for controlling the operation of the subjective optometry device 100, test target data, etc. Note that the controller 60 may be configured with multiple controllers (i.e., multiple processors).

[0060] The control unit 60 is connected to the speaker 3, the display 31, the examiner controller 10, the subject controller 20, a non-volatile memory 70 (hereinafter referred to as the memory 70), etc. The control unit 60 is also 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.

[0061] The memory 70 is a non-transitory storage medium that can retain its contents even when the power supply is cut off. For example, the memory 70 may be a hard disk drive, a flash ROM, a USB memory, or the like.

[0062] <Control Operation> A control operation in the first embodiment of the subjective optometry apparatus 100 having the above-described configuration will be described.

[0063] The subjective optometry device 100 in this embodiment can set two self-optometry programs that automatically perform a plurality of examination items for the subject's eye based on answers input by the subject. For example, the two self-optometry programs have different combinations of the plurality of examination items.

[0064] For example, one self-eye examination program (hereinafter referred to as the first self-eye examination program) is a program that includes, as multiple examination items, an examination item for testing the refractive power of the subject's eye. For example, the examination item for testing the refractive power of the subject's eye is a general examination item. As an example, it is executed when eyeglasses are made. For example, another self-eye examination program (the second self-eye examination program) is a program that includes, in addition to an examination item for testing the refractive power of the subject's eye, an examination item for testing the binocular vision function of the subject's eye. For example, the examination item for testing the binocular vision function of the subject's eye is an examination item that is executed when it is desired to understand the optical characteristics of the subject's eye, etc. These first self-eye examination program and second self-eye examination program are stored in advance in the memory 70.

[0065] Furthermore, the subjective optometry device 100 in this embodiment is initially set to a first self-optometry program, and the subjective examination is performed in accordance with the procedures of the first self-optometry program. However, the first self-optometry program and the second self-optometry program can be switched and set as appropriate depending on, for example, the type of eyeglasses desired by the subject, the examination conditions of the subject's eye (e.g., the examiner's experience level and the optical characteristics of the subject's eye), the operating conditions of the facility or store where the subjective optometry system is installed (e.g., busy times and dates), etc.

[0066] <Subjective Examination Based on First Self-Optic Examination Program> The subjective examination according to the procedure of the first self-optic examination program will be described below. The examiner uses the self-optic examination auxiliary screen displayed on the monitor 12 of the examiner controller 10 to prepare for the subjective examination according to the procedure of the first self-optic examination program, input a start signal, initialize the examination results, and so on.

[0067] 6 shows an example of the self-eye examination support screen 200 when setting the first self-eye examination program. For example, the self-eye examination support screen 200 has an operation image area 210, an eye examination program setting area 220, and the like.

[0068] The operation image area 210 displays an operation image including information about the optical characteristics of the visual target light beam emitted from the display 31 toward the subject's eye. For example, the operation image displays values ​​related to the optical characteristics of the visual target light beam for each type of optical characteristic. The examiner can specify values ​​for multiple types of optical characteristics (spherical power, cylindrical power, astigmatic axis angle, etc.) by operating various buttons and values ​​on the operation image area 210 via the touch panel or switch unit 11. When the self-eye examination is performed appropriately, the correction values ​​of the optical characteristics displayed in the operation image become the measured values ​​of the optical characteristics of the subject's eye.

[0069] The eye examination program setting area 220 includes an ID button 221, an initial value input button 222, a near vision measurement selection button 223, a self-eye examination program switching button 224, a voice guide selection button 225, a volume test button 226, and a start button 227. For example, the ID button 221 is a button for inputting the subject's ID. For example, the initial value input button 222 is a button for acquiring an initial correction value (initial value) when starting a self-eye examination of the subject's eye. For example, the initial value may be the objective refractive power of the subject's eye measured with an objective refractive power measurement device, eyeglass lens information measured with an eyeglass lens measurement device, or the like. For example, the near vision measurement selection button 223 is a button for selecting whether to perform near vision measurement in the subjective eye examination. For example, the self-eye examination program switching button 224 is a button for switching between a first self-eye examination program and a second self-eye examination program. The name of the currently selected self-eye examination program is superimposed on the self-eye examination program switch button 224. For example, the audio guide selection button 225 is a button for changing the language of the audio guide. For example, the volume test button 226 is a button for playing a test audio to check the volume of the audio guide. For example, the start button 227 is a button for starting the self-eye examination.

[0070] <Setting Initial Values> First, the examiner acquires the objective refractive power of the subject's eye in order to correct the subject's eye to a predetermined correction value (initial value). For example, the examiner inputs the subject's ID using the ID button 221 and then presses the initial value input button 222. For example, based on the input signal from the initial value input button 222, the control unit 60 outputs an operation signal to an objective refractive power measurement device (not shown) to transmit the objective refractive power associated with the subject's ID. For example, upon receiving the subject's ID from the subjective optometry device 100, the objective refractive power measurement device retrieves the objective refractive power associated with the subject's ID from its memory and transmits it to the subjective optometry device 100. The control unit 60 of the subjective optometry device 100 receives the objective refractive power transmitted from the objective refractive power measurement device. This allows the subject's objective refractive power to be acquired.

[0071] For example, the control unit 60 sets the objective ocular refractive power as an initial value for the subjective examination. For example, the control unit 60 controls the ocular refractive power measurement unit 40 to place an optical element 52 having a predetermined spherical power and an optical element 52 having a cylindrical power in the examination window 43. Also, for example, the control unit 60 places the optical element 52 having a predetermined cylindrical power in the examination window 43 at a predetermined astigmatic axis angle. As a result, the eye E to be examined is corrected to the initial value.

[0072] <Subjective Examination> After correcting the eye E to the initial value, the examiner checks the self-eye examination program switch button 224 on the self-eye examination auxiliary screen 200, checks the currently set self-eye examination program, and presses the start button 227. The control unit 60 starts the self-eye examination of the eye E based on an input signal from the start button 227. For example, in the first self-eye examination program, spherical examination, astigmatic axis examination, cylinder examination, and visual acuity test are performed as test items for checking the refractive power of the eye E. For example, the control unit 60 progresses these tests in order while changing the correction value of the eye E, the type and visual acuity value of the test target presented to the eye E, etc.

[0073] <Spherical Test (Step S1)> In this embodiment, a red-green test is performed to adjust the spherical correction value for correcting the subject's eye. The red-green test can determine whether the state of the subject's eye corrected with the desired spherical correction value corresponds to myopia, emmetropia, or hyperopia. For example, if the optotype that can be clearly seen is red, it is determined to be myopic; if it is green, it is determined to be hyperopic; and if the colors are the same, it is determined to be emmetropia. Note that, for example, if the subject is in a hyperopic state, it is determined to be overcorrected, and the spherical correction value is lowered until the subject is in a state of emmetropia (or myopia).

[0074] At the start of the red-green test, the control unit 60 generates audio guidance from the speaker 3, which guides the subject in operating the subject controller 20 in the red-green test. As an example, audio guidance may be generated to instruct the subject to tilt the answer lever 21 to the left if the target that is clearly visible between the red and green targets is red, tilt the answer lever 21 to the right if the target is green, and press the answer button 22 if the targets are about the same.

[0075] Next, the control unit 60 proceeds with the test and displays the red-green optotype on the display 31. For example, the red of the red-green optotype is displayed on the left side and the green on the right side. The control unit 60 also generates a voice prompt asking the subject which color of the optotype the subject can clearly see. The subject checks the optotype and either tilts the answer lever 21 to the left or right, or presses the answer button 22.

[0076] When the control unit 60 receives a response signal from the answer lever 21 in response to the subject selecting either the red or green optotype, it increases or decreases the spherical power by one level depending on the tilt direction of the answer lever 21. The control unit 60 also generates a voice prompt again asking about the color of the optotype. For example, the control unit 60 repeats this type of control to automatically progress the test.

[0077] For example, when the control unit 60 receives a response signal from the answer button 22 indicating that the subject judges the red and green optotypes to be of the same color, the control unit 60 ends the red-green test. The spherical correction value with which the subject's eye is corrected at the end of the test is set as the spherical correction value at the start of the visual acuity test.

[0078] <Astigmatic Axis Test (Step S2)> Next, in this embodiment, a cross cylinder test is performed to adjust the astigmatic axis angle for correcting the eye. Here, it is possible to determine whether the astigmatic axis angle of the eye matches the desired astigmatic axis angle for correcting the eye. For example, if there is a difference in how the two point cloud targets appear, it is determined that the angles do not match, and if the two point cloud targets appear to be similar, it is determined that the angles match.

[0079] At the start of the cross cylinder test, the control unit 60 generates from the speaker 3 an audio guide that explains how to operate the subject controller 20 in the cross cylinder test. As an example, the control unit 60 generates an audio guide instructing the subject to tilt the answer lever 21 in the direction of the clearly visible point cloud target, and to press the answer button 22 if the point cloud target is similar. The control unit 60 repeatedly changes the astigmatic axis angle until it receives a response signal from the answer button 22, and ends the cross cylinder test when it receives a response signal from the answer button 22. The astigmatic axis angle with which the subject's eye has been corrected at the end of the test is set to the astigmatic axis angle at the start of the visual acuity test.

[0080] <Cylinder Test (Step S3)> Next, in this embodiment, a cross cylinder test is performed again to adjust the cylindrical correction value for correcting the subject's eye. Here, it is possible to determine whether the state in which the subject's eye is corrected with the desired cylindrical power is appropriate. For example, if there is a difference in the appearance of the two point cloud optotypes, it is deemed inappropriate, and if the appearance of the two point cloud optotypes is similar, it is deemed appropriate. The control unit 60 similarly generates audio guidance and repeatedly changes the cylindrical correction value until it receives a response signal from the answer button 22. When it receives a response signal from the answer button 22, it ends the cross cylinder test. Note that the cylindrical correction value used to correct the subject's eye at the end of the test is considered to be the cylindrical correction value at the start of the visual acuity test.

[0081] <Spherical Test (Step S4)> Next, in this embodiment, a red-green test is performed again to adjust the spherical correction value for correcting the eye to be examined. Here, it is confirmed whether accommodation by the eye to be examined is working. As an example, the spherical correction value is the same at the end of step S1 and the start of step S4, but if accommodation is working, the appearance of the red-green optotype will change. Note that the red-green test in step S4 is basically the same as the red-green test in step S1, so a description thereof will be omitted.

[0082] <Visual Acuity Test (Step S5)> Next, a corrected visual acuity test (VA test) is conducted to obtain the highest visual acuity value in a state where the subject's eye has been corrected with the predetermined correction value adjusted in steps S1 to S4.

[0083] At the start of the corrected visual acuity test, the control unit 60 generates from the speaker 3 an audio guide that indicates how to operate the subject controller 20 in the corrected visual acuity test. As an example, the control unit 60 generates an audio guide instructing the subject to tilt the answer lever 21 in accordance with the direction of the slits on the Landolt ring, and to press the answer button 22 if the subject does not know the direction of the slits. When the control unit 60 receives a response signal from the answer lever 21 in response to the subject selecting the direction of the slits, the control unit 60 increases or decreases the visual acuity value by one level depending on the tilt direction of the answer lever 21. The control unit 60 repeatedly changes the direction of the slits until it receives a response signal from the answer button 22, and ends the corrected visual acuity test when it receives a response signal from the answer button 22. For example, the visual acuity value of the Landolt ring that the subject last answered correctly is obtained as the highest visual acuity value.

[0084] <Initialization> In this embodiment, in the self-eye examination using the subjective eye examination device 100, the above-described tests in steps S1 to S4 are performed on the right eye, and then similarly performed on the left eye. The control unit 60 outputs the test results for the right and left eyes (e.g., measurement values ​​such as spherical correction value, cylindrical correction value, and astigmatism axis angle). For example, the control unit 60 may display the measurement values ​​on the self-eye examination auxiliary screen 200, print them out, or output them to the outside of the device via wireless or wired communication.

[0085] The examiner checks the examination results of the subject's eye and presses an examination end button (not shown) to end the self-eye examination of the subject's eye. In response to an input signal from the examination end button, the control unit 60 clears the examination results displayed on the self-eye examination auxiliary screen 200. This completes the initialization of the subjective eye examination device 100.

[0086] In this embodiment, when the first self-eye examination program is set in this manner, the test items for testing the refractive power of the subject's eye (spherical test, astigmatism axis test, cylinder test, and visual acuity test) are automatically performed. For example, by setting the first self-eye examination program and performing a limited number of predetermined test items, even an inexperienced examiner can easily perform the test. Furthermore, because the time required for the self-eye examination is reduced, the test can be performed smoothly, taking into account the congestion of the facility or store where the device is installed.

[0087] <Subjective Examination Based on Second Self-Eye Examination Program> In this embodiment, the first self-eye examination program is initially set, but it is possible to switch to the second self-eye examination program depending on the type of eyeglasses desired by the subject and various circumstances when examining the subject's eyes. For example, it is possible to switch to the self-eye examination program as appropriate when dealing with so-called custom lenses that finely adjust the subject's line of sight and vision, or when the facility or store is not crowded and more careful attention can be given to the subject.

[0088] The subjective examination according to the procedure of the second self-eye examination program will be described below. First, the examiner switches the self-eye examination program using the self-eye examination auxiliary screen displayed on the monitor 12 of the examiner controller 10.

[0089] 7 shows an example of the self-eye examination assistance screen 200 when setting the second self-eye examination program. For example, the examiner changes the setting from the first self-eye examination program to the second self-eye examination program by pressing the self-eye examination program switching button 224. The control unit 60 changes the superimposed display of the self-eye examination program name on the self-eye examination program switching button 224. The control unit 60 also calls up the second self-eye examination program from the memory 70 and applies it.

[0090] Furthermore, the examiner uses the self-eye examination auxiliary screen 200 to prepare for a subjective examination in accordance with the procedures of the second self-eye examination program (for example, setting an initial value for correcting the eye E), and then starts the self-eye examination. For example, the second self-eye examination program includes, in addition to an examination item for testing the refractive power of the eye E, a binocular accommodation balance test for testing the accommodation balance of the eye E as an examination item for testing the binocular vision function of the eye E. For example, the control unit 60 progresses these examinations in order while changing the correction value of the eye E, the type and visual acuity value of the test target presented to the eye E, etc.

[0091] For example, similar to the first self-eye examination program, the second self-eye examination program also proceeds in order from a spherical test (step S1) to a visual acuity test (step S5) (description of these steps will be omitted). For example, once the spherical correction value, cylindrical correction value, astigmatism axis angle, etc. for each of the right and left eyes are obtained, the program moves on to a binocular accommodation balance test.

[0092] <Binocular Accommodation Balance Test (Step S6)> In this embodiment, a polarized red-green test is performed to adjust the balance of vision between the right and left eyes. The polarized red-green test can determine whether the accommodation of the right and left eyes is equivalent. For example, if there is a difference between how the red and green targets in the upper row of a polarized red-green test appear and how the red and green targets in the lower row appear, it is determined that the balance is not achieved.

[0093] FIG. 8 is a diagram illustrating a polarized red-green optotype 80. FIG. 8A shows how it appears with both eyes. FIG. 8B shows how it appears with the left eye. FIG. 8C shows how it appears with the right eye. For example, the polarized red-green optotype 80 is composed of a polarized red-green optotype 83 for the left eye (hereinafter referred to as the left polarization R / G optotype 83), a polarized red-green optotype 81 for the right eye (hereinafter referred to as the right polarization R / G optotype 81), and a fusion optotype 85. For example, the left polarization R / G optotype 83 includes a red optotype 83R arranged on the left side and a green optotype 83G arranged on the right side. For example, the right polarization R / G optotype 81 includes a red optotype 81R arranged on the left side and a green optotype 81G arranged on the right side. For example, the fusion optotype 85 is arranged between the right polarization R / G optotype 81 and the left polarization R / G optotype 83.

[0094] At the start of the polarized red-green test, the control unit 60 generates, from the speaker 3, a voice guide indicating how to operate the subject controller 20 in the polarized red-green test. As an example, if the green optotype is clearly visible in the upper row (right eye) and the red optotype is clearly visible in the lower row (left eye), a voice guide may be generated instructing the subject to push the answer lever 21 to the left. Alternatively, if the red optotype is clearly visible in the upper row and the green optotype is clearly visible in the lower row, a voice guide may be generated instructing the subject to push the answer lever 21 to the right. Alternatively, if the green optotypes in the upper and lower rows are clearly visible, if the red optotypes in the upper and lower rows are clearly visible, or if all of the optotypes in the upper and lower rows are equally visible, a voice guide may be generated instructing the subject to press the answer button 22.

[0095] Next, the control unit 60 proceeds with the test and displays the polarized red-green optotype on the display 31. The control unit 60 also places the polarized lenses 30L and 30R in the test window 43 of the eye refraction measurement unit 40. When the control unit 60 receives a response signal from the answer lever 21 by the subject, it increases or decreases the spherical correction value by one step depending on the tilt direction of the answer lever 21. Furthermore, for example, the control unit 60 repeats adjustment of the spherical correction value until it receives a response signal from the answer button 22, and ends the polarized red-green test when it receives a response signal from the answer button 22.

[0096] When the binocular accommodation balance test of the subject's eye E is completed, the control unit 60 outputs test results such as the spherical correction value, cylindrical correction value, and astigmatism axis angle of the subject's eye E. In addition, the control unit 60 clears the test results displayed on the self-eye examination auxiliary screen 200 in response to an input signal from an examination end button (not shown) operated by the examiner, thereby completing initialization.

[0097] In this embodiment, when the second self-eye examination program is set as described above, the binocular vision function test for the subject eye E is automatically performed following the test items for testing the refractive power of the subject eye (spherical test, astigmatism axis test, cylinder test, and visual acuity test). Of course, the binocular vision function test may be a test item different from the binocular accommodation balance test described above, or a test item different from the binocular accommodation balance test may be performed in addition to the binocular accommodation balance test. This makes it possible to obtain more detailed test results for the subject eye through the self-eye examination.

[0098] Second Example A second example of the subjective optometry system according to this embodiment will be described. Here, we will take as an example a case where the self-optometry program applied to the subjective optometry device 100 is automatically switched by setting a schedule associated with a predetermined period. Note that the same configuration as in the first example (e.g., the device exterior, the light projection optical system, the control unit, etc.) is the same as in the first example, and therefore detailed description thereof will be omitted.

[0099] 9 shows an example of the self-eye examination support screen in the second embodiment. The self-eye examination support screen 200 may be provided with a separate schedule setting button 228. For example, the schedule setting button 228 is a button that displays a schedule setting screen. For example, the schedule setting screen is a screen for setting a self-eye examination program based on calendar information.

[0100] FIG. 10 is an example of a schedule setting screen 300. For example, the schedule setting screen 300 is provided with a calendar screen 310, a month switching button 311, a date button 312, a day-of-week batch switching button 313, a week-of-week batch switching button 314, a screen switching button 320, and the like. For example, the calendar screen 310 is a screen for setting and checking a self-eye examination program for each date. For example, the month switching button 311 is a button for switching the calendar (month) on the calendar screen 310. For example, the date button 312 is a button for setting a self-eye examination program for a desired date. For example, the day-of-week batch switching button 313 is a button for setting a self-eye examination program collectively by day of the week. For example, the week-of-week batch switching button 314 is a button for setting a self-eye examination program collectively by week. For example, the screen switching button 320 is a button for returning to the self-eye examination assistance screen 200 (see FIG. 9 ).

[0101] <Control Operation> A control operation of the second embodiment of the subjective optometry device 100 having the above-described configuration will be described. The subjective optometry device 100 of this embodiment automatically switches between the first self-eye examination program and the second self-eye examination program according to a pre-set optometry schedule. For example, by setting the optometry schedule in accordance with the operating conditions (busy times, dates, etc.) of the facility or store where the device is installed, the self-eye examination of the subject's eye can be performed smoothly.

[0102] <Setting an Eye Examination Schedule> First, the examiner sets an eye examination schedule that associates a first self-eye examination program and a second self-eye examination program with a predetermined period. For example, the examiner operates the examiner controller 10 and presses the schedule setting button 228 on the self-eye examination auxiliary screen 200. The control unit 60 displays the schedule setting screen 300 based on an input signal from the schedule setting button 228. Also, for example, the examiner presses any of the date button 312, the day of the week all-at-once switching button 313, or the week all-at-once switching button 314 on the calendar screen 310 of the schedule setting screen 300. Here, the case where the date button 312 is selected will be taken as an example. The control unit 60 displays a self-eye examination program selection screen based on an input signal from the date button 312. For example, the self-eye examination program selection screen is a screen for setting a desired self-eye examination program for a date specified by the date button 312.

[0103] 11 is an example of a self-eye examination program selection screen 400. For example, the self-eye examination program selection screen 400 may be provided with a self-eye examination program selection field 410, a self-eye examination program display field 420, etc. For example, the self-eye examination program selection field 410 has radio buttons for selecting either a first self-eye examination program or a second self-eye examination program. For example, the self-eye examination program display field 420 displays the progression order of the examination items for the self-eye examination program selected using the radio buttons in the self-eye examination program selection field 410.

[0104] For example, the examiner checks the examination contents of each self-eye examination program using the self-eye examination program display field 420, and selects a desired self-eye examination program using the radio buttons in the self-eye examination program selection field 410. For example, the control unit 60 displays the schedule setting screen 300 (see FIG. 10 ) based on an input signal from the self-eye examination program selection screen 400, and superimposes a code or the like (in this embodiment, "A" for the first self-eye examination program and "B" for the second self-eye examination program) that allows the examiner to identify the self-eye examination program selected by the examiner on the date button 312.

[0105] For example, the examiner operates the date buttons 312 one by one to set the first self-eye examination program and the second self-eye examination program for a period such as one week, one month, or six months. For example, the first self-eye examination program "A" may be initially set on each date button 312, and the second self-eye examination program "B" may be selected only for a specific date using the date button 312. For example, the setting on a specific date button 312 may be configured to be duplicated for a different date, or may be configured to allow multiple days of setting to be made at once. For example, the setting of the first self-eye examination program or the second self-eye examination program may be set using a timetable or the like. That is, the time period for applying the first self-eye examination program or the second self-eye examination program may be set. As an example, the setting of the self-eye examination program may be changed in time units such as morning and afternoon.

[0106] For example, the examiner presses the screen switching button 320 to return to the self-eye examination auxiliary screen 200. In response to the operation signal from the screen switching button 320, the control unit 60 associates the date of the date button 312 with the self-eye examination program selected by the examiner and stores them in the memory 70. In this way, for example, an eye examination schedule is created.

[0107] <Switching of Self-Eye Examination Programs> The control unit 60 obtains the current date and time using a timing mechanism (e.g., a calendar timer, etc.) not shown in the drawings provided in the subjective eye examination device 100. Furthermore, when a predetermined time (e.g., 0:00:00 AM) for changing the self-eye examination program arrives, the control unit 60 calls up a designated self-eye examination program from the memory 70 in accordance with the eye examination schedule, applies the designated self-eye examination program, and automatically switches the self-eye examination program. For example, the control unit 60 may overwrite the settings of the designated self-eye examination program only at a predetermined time on the day when the first self-eye examination program switches from the second self-eye examination program on the eye examination schedule. Furthermore, for example, the control unit 60 may cancel the settings of the current self-eye examination program and reflect the settings of the designated self-eye examination program at each predetermined time every day, regardless of whether the first self-eye examination program switches from the second self-eye examination program to the first self-eye examination program on the eye examination schedule.

[0108] In this embodiment, it is possible to set in advance an eye examination schedule that corresponds to each self-eye examination program. For example, by understanding the examiner's work shift, the operating status of the facility, busy times, etc., and setting an eye examination schedule that takes these into consideration, an appropriate self-eye examination program can be easily set, allowing the examination to be carried out smoothly.

[0109] As described above, for example, the subjective eye examination system of this embodiment includes an eye target presenting means for presenting a test target to the eye to be examined, a corrective means for changing the optical characteristics of the eye target light beam emitted from the eye target presenting means, a self-eye examination program setting means for setting either a first self-eye examination program for automatically progressing through multiple test items for the eye to be examined based on answers input by the subject, or a second self-eye examination program for automatically progressing through multiple test items for the eye to be examined based on answers input by the subject, the second self-eye examination program having different test conditions from the first self-eye examination program, and a self-eye examination program setting means for controlling at least one of the eye target presenting means and the corrective means based on the first self-eye examination program or the second self-eye examination program set by the self-eye examination program setting means, and for progressing the eye examination in accordance with the procedures of the self-eye examination program. With this configuration, a program tailored to the type of eyeglasses, the examination situation, the operation situation, etc. can be easily applied, allowing the examination to be performed smoothly.

[0110] Furthermore, for example, in the subjective eye examination system of this embodiment, the first self-eye examination program and the second self-eye examination program differ in at least one of a plurality of examination items as examination conditions. This allows the examination to be carried out smoothly, for example, by appropriately setting the first self-eye examination program and the second self-eye examination program and proceeding with the program of examination items according to the type of eyeglasses desired by the subject, the examination status of the subject's eyes, the operating status of the facility or store where the device is installed, etc.

[0111] Furthermore, for example, in the subjective eye examination system of this embodiment, the first self-eye examination program includes, as its multiple examination items, an examination item for examining the refractive power of the subject's eye, and the second self-eye examination program includes, as its multiple examination items, an examination item for examining the binocular vision function of the subject's eye in addition to an examination item for examining the refractive power of the subject's eye. For example, the examination item for examining the refractive power of the subject's eye is a general examination item. Therefore, by setting the first self-eye examination program, it is possible to efficiently accommodate a large number of subjects. Furthermore, for example, the examination item for examining the binocular vision function of the subject's eye is an examination item that is performed when it is desired to understand the optical characteristics of the subject's eye. Therefore, by setting the second self-eye examination program, it is possible to prepare eyeglasses that are more optimal for the subject's eye using the test results of the refractive power and visual function of the subject's eye.

[0112] Furthermore, for example, the subjective eye examination system of this embodiment includes an eye examination schedule setting means for setting an eye examination schedule that associates the first self-eye examination program and the second self-eye examination program with a predetermined period, and the self-eye examination program setting means switches between the first self-eye examination program and the second self-eye examination program based on the eye examination schedule set by the eye examination schedule setting means. This makes it possible to set an eye examination schedule according to the operating status of the facility or store where the subjective eye examination system is installed, for example, and the self-eye examination program is automatically switched at predetermined intervals, allowing the examination to be carried out smoothly.

[0113] Furthermore, for example, the subjective eye examination system of this embodiment includes an operation means for inputting an operation signal for setting at least one of the first self-eye examination program and the second self-eye examination program, and the eye examination schedule setting means sets an eye examination schedule that associates the first self-eye examination program and the second self-eye examination program with a predetermined period based on the operation signal from the operation means. For example, a manager of a facility or store where the subjective eye examination system is installed, or an examiner who uses the subjective eye examination system, can set an optimal eye examination schedule for each facility or store, and a self-eye examination program according to the operating situation, etc. is automatically applied, allowing for smooth examinations.

[0114] <Modifications> In this embodiment, the first and second self-eye examination programs have been described with respect to a configuration in which the test conditions for multiple test items are different. However, this is not limiting. For example, the first and second self-eye examination programs may have test conditions in which the test symbols used for multiple test items are different. For example, both the first and second self-eye examination programs may be programs that progress sequentially from a spherical test to a visual acuity test. Of course, the second self-eye examination program may also include a binocular accommodation balance test, an eye position test, and the like. In this case, the test symbols used in the visual acuity test of the first and second self-eye examination programs may be different. For example, the Landolt ring test or the Tumbling E test may be used. Similarly, different test symbols may be used for the spherical test, astigmatism axis test, and cylinder test of the first and second self-eye examination programs. It should be noted that each self-eye examination program does not necessarily need to have different test targets set for all common test items.

[0115] In the subjective optometry system of this embodiment, the first self-optometry program and the second self-optometry program have different test targets used in the test items as test conditions. For example, when testing the subject's eyes, the type of test target or display format may be changed to suit the country or region where the subjective optometry system is installed, or the number and type of test targets may be changed depending on the test conditions of the subject's eyes. As in this embodiment, by providing multiple self-optometry programs with different test targets in advance, the self-optometry program can be switched as needed to perform the test smoothly.

[0116] In this embodiment, a configuration in which either the first self-eye examination program or the second self-eye examination program is manually set has been described as an example, but this is not limiting. In this embodiment, these self-eye examination programs may be automatically set. For example, in this case, information from a reservation system or the like that can confirm the congestion status of a facility or store may be used. Also, for example, in this case, subject information (such as a subject ID) may be used.

[0117] For example, when information from a reservation system or the like is used, the control unit 60 may switch the self-eye examination program based on whether the number of subjects waiting for the eye examination exceeds a certain number. For example, the control unit 60 may set a first self-eye examination program when the number of subjects registered in the reservation system exceeds a certain number. In this embodiment, by applying the first self-eye examination program, only general refraction test items are performed, allowing the self-eye examination to proceed efficiently even when there are many subjects waiting. Furthermore, for example, the control unit 60 may set a second self-eye examination program when the number of subjects registered in the reservation system is below a certain number. In this embodiment, by applying the second self-eye examination program, a binocular accommodation balance test and the like are also performed, allowing more detailed test results of the subject's eyes to be obtained when there are few subjects waiting.

[0118] For example, when subject information is used, the control unit 60 may switch the self-eye examination program based on data linked to the subject information, such as the type of eyeglasses created last time, the results of the last examination, the presence or absence of a disease, etc. For example, the control unit 60 may set a second self-eye examination program when the subject information includes a history of having performed a binocular accommodation balance test in the previous examination.

[0119] In this embodiment, the test conditions for the first and second self-eye examination programs are set in advance, and the test proceeds according to predetermined test items. However, the present invention is not limited to this. For example, the test conditions for at least one of the first and second self-eye examination programs may be configured to be changeable in advance.

[0120] 12 shows an example of a self-eye examination support screen 200 for editing the examination conditions of a self-eye examination program. For example, the self-eye examination support screen 200 may be provided with a self-eye examination program edit button 229. For example, the self-eye examination program edit button 229 is a button that displays a self-eye examination program edit screen.

[0121] 13 is an example of a self-eye examination program selection screen 500. For example, the self-eye examination program selection screen 500 is provided with a self-eye examination program selection button 501, an add self-eye examination program button 502, a screen switching button 503, and the like. For example, the self-eye examination program selection button 501 is a button for editing a self-eye examination program. For example, the add self-eye examination program button 502 is a button for registering an additional self-eye examination program. For example, the screen switching button 503 is a button for returning to the self-eye examination auxiliary screen 200 (see FIG. 12 ).

[0122] For example, when the examiner presses the self-eye examination program selection button 501 on the self-eye examination program selection screen 500, the control unit 60 displays a self-eye examination program editing screen based on an input signal from the self-eye examination program selection button 501. For example, the self-eye examination program editing screen is a screen for editing the contents of the self-eye examination program.

[0123] FIG. 14 shows an example of a self-eye examination program editing screen 600. For example, the self-eye examination program editing screen 600 is provided with a self-eye examination program progress order field 610, a test item selection field 620, a test item editing field 630, a screen switching button 640, and the like. For example, the self-eye examination program progress order field 610 allows the user to change the progress order of the test items in the self-eye examination program, or to add or delete test items. For example, the test item selection field 620 displays test items that can be added to the self-eye examination program. For example, the test item editing field 630 changes the test optotype used for the test item selected in the test item selection field 620. For example, the audio guidance selection field 632 selects the content of the audio guidance for the test item selected in the test item selection field 620. For example, the screen switching button 640 is a button for returning to the self-eye examination program selection screen 500 (see FIG. 13 ).

[0124] For example, the examiner can change, from the self-eye examination auxiliary screen 200, whether or not to perform a test item included in at least one of the first self-eye examination program and the second self-eye examination program. As an example, here, a case will be described in which a stereoscopic vision test is added to the test items of the second self-eye examination program. The examiner presses the self-eye examination program edit button 229 on the self-eye examination auxiliary screen 200. The control unit 60 displays a self-eye examination program selection screen 500 based on an input signal from the self-eye examination program edit button 229. The examiner also presses the self-eye examination program selection button 501 on the self-eye examination program selection screen 500. For example, the examiner presses a button corresponding to the second self-eye examination program. The control unit 60 displays the self-eye examination program edit screen 600 based on an input signal from the self-eye examination program selection button 501.

[0125] The examiner drags and drops a stereoscopic test selected from the list of test items displayed in the test item selection field 620 to any position in the progression order of test items in the second self-eye examination program displayed in the self-eye examination program progression order field 610. For example, the examiner drags and drops the stereoscopic test to the position next to the binocular accommodation balance test. When setting the second self-eye examination program, the control unit 60 incorporates the stereoscopic test into the progression order of the second self-eye examination program so that the stereoscopic test is performed in addition to the spherical test to the binocular accommodation balance test described above. For example, in this way, it is possible to change whether or not to perform the test items included in each self-eye examination program.

[0126] Furthermore, for example, the examiner can change the type of test optotype used in the test items included in at least one of the first self-eye examination program and the second self-eye examination program from the self-eye examination auxiliary screen 200. As an example, here, we will take the case of changing the type of test optotype used in the corrected visual acuity test (VA test) of the second self-eye examination program. The examiner operates the self-eye examination program edit button 229 and the self-eye examination program select button 501 to call up the self-eye examination program edit screen 600.

[0127] The examiner selects a corrected visual acuity test (VA test) from the list of test items displayed in the test item selection field 620. The control unit 60 displays the type of test optotype set for the corrected visual acuity test in the test item editing field 630 based on an input signal from the test item selection field 620. For example, either a Landolt ring optotype 631a or a tumbling E optotype 631b can be set as the type of test optotype, and the field corresponding to the test optotype selected by the examiner may be highlighted. The control unit 60 reflects this in the settings of the second self-eye examination program so that the Landolt ring optotype is displayed in the corrected visual acuity test. For example, in this way, the type of test optotype used in the test items included in the self-eye examination program can be changed.

[0128] The examiner can also add a self-eye examination program different from the first self-eye examination program and the second self-eye examination program by using the add self-eye examination program button 502. The examiner can also change the content of the audio guidance for the examination item selected in the examination item selection field 620 from the audio guidance selection field 632 on the self-eye examination program editing screen 600. For example, the examiner may be able to change at least one of the message read out by the audio guidance, the frequency with which the audio guidance is repeated, etc.

[0129] As described above, the subjective optometry system of this embodiment includes a setting change unit that changes at least one of the test conditions of the first self-optometry program and the second self-optometry program. For example, the test conditions of the first self-optometry program and the second self-optometry program pre-installed in the subjective optometry system may not be suitable for some subjects. In such cases, for example, the test conditions of the self-optometry program can be changed (i.e., rewritten) to match the test conditions desired by the examiner before starting the self-optometry of the subject's eyes, allowing the test to proceed smoothly under the desired test conditions.

[0130] In this embodiment, a configuration in which an eye examination schedule that associates either the first self-eye examination program or the second self-eye examination program with a predetermined period is manually set has been described as an example, but this is not limiting. In this embodiment, such an eye examination schedule may also be set automatically. For example, the eye examination schedule may be set automatically by receiving an operation signal from a management medium (e.g., a computer, a terminal device, etc.) that manages the subjective eye examination system. In this case, it is also possible to send the eye examination schedule from a single management medium to multiple subjective eye examination devices, change the settings of the multiple subjective eye examination devices collectively, and unify the eye examination schedules.

[0131] FIG. 15 illustrates a network connection of multiple subjective optometry devices via a terminal device. For example, the terminal device 700 may be a tablet PC, notebook PC, smartphone, desktop PC, or main subjective optometry device. For example, the terminal device 700 is communicatively connected to multiple subjective optometry devices. For example, the terminal device 700 is network-connected to multiple subjective optometry devices via at least one of wireless and wired communication. For example, the examiner creates an optometry schedule using the terminal device 700 and saves the optometry schedule information (e.g., a CSV file) in a shared folder 710 on the network. For example, the control unit of each subjective optometry device acquires the optometry schedule information saved in the shared folder 710 on the network upon startup, and based on this, associates either the first or second self-examination program with a date, etc. This allows the optometry schedule to be automatically set. This reduces the examiner's workload. This also unifies the optometry schedule across multiple subjective optometry devices.

[0132] Identification information for associating at least one of a plurality of subjective optometry devices may be set in the optometry schedule information stored in the terminal device 700. For example, the optometry schedule information (e.g., a CSV file) may be stored in association with identification information (e.g., an identification symbol, an identification number, etc.) unique to each subjective optometry device. In this case, the control unit of each subjective optometry device can access the shared folder 710 and read the optometry schedule that matches the unique identification number, thereby setting a different optometry schedule for each subjective optometry device.

[0133] In the above description, the terminal device 700 and a network connection are used to automatically set the eye examination schedule in the subjective eye examination device, but the eye examination schedule may also be set using an external storage medium. For example, eye examination schedule information may be stored in a USB memory, an SD card, or the like, and read into each subjective eye examination device. Furthermore, in the above description, the eye examination schedule corresponding to the first and second self-eye examination programs is set from the terminal device 700, but the test conditions for at least one of the first and second self-eye examination programs may also be set. In other words, the test items and test targets for each self-eye examination program may be changed and reflected in each device.

[0134] In this embodiment, a configuration has been described in which the settings of the first self-eye examination program or the second self-eye examination program are automatically switched based on an eye examination schedule that associates the first self-eye examination program with a predetermined period, but this is not limiting. For example, even if the first self-eye examination program is set based on the eye examination schedule, the second self-eye examination program may be temporarily set to sequentially proceed through the test items included in the second self-eye examination program. Furthermore, for example, even if the second self-eye examination program is set based on the eye examination schedule, the first self-eye examination program may be temporarily set to sequentially proceed through the test items included in the first self-eye examination program.

[0135] For example, the examiner can temporarily change the self-eye examination program by pressing the self-eye examination program switching button 224 on the self-eye examination auxiliary screen 200 (see FIG. 7 ). For example, if the examiner determines that a first self-eye examination program is set according to the eye examination schedule but that the next subject should be examined using a second self-eye examination program, the examiner may press the self-eye examination program switching button 224 to set the second self-eye examination program. The control unit 60 switches the setting to the second self-eye examination program, which is different from the current first self-eye examination program, based on the input signal from the eye examination program switching button 224. Furthermore, when the examination based on the temporarily set second self-eye examination program is completed and the examination results are cleared, the control unit 60 sets the first self-eye examination program again. This allows the examiner to easily change the self-eye examination program before the subject's examination, even if the current self-eye examination program is not suitable for that subject, thereby enabling the examination to be carried out smoothly.

[0136] REFERENCE SIGNS LIST 1 Housing 2 Presentation window 3 Speaker 10 Examiner controller 20 Subject controller 30 Light projection optical system 40 Eye refractive power measurement unit 43 Examination window 60 Control unit 100 Subjective ophthalmological examination device

Claims

1. A subjective ophthalmography system for subjectively measuring the optical properties of the eye being examined, A target presentation means for presenting an examination target to the eye under examination, A correction means for changing the optical properties of the target light beam emitted from the target presentation means, A self-examination program setting means for setting either a first self-examination program that automatically proceeds with multiple examination items for the eye under examination based on answers entered by the subject, or a second self-examination program that automatically proceeds with multiple examination items for the eye under examination based on answers entered by the subject, the second self-examination program having different examination conditions from the first self-examination program, A control means controls at least one of the target presentation means and the correction means based on the first self-examination program or the second self-examination program set by the self-examination program setting means, and proceeds with an eye examination in accordance with the procedure of the first self-examination program or the second self-examination program, A subjective eye examination system characterized by having the following features.

2. In the subjective optometry system of claim 1, The first self-examination program and the second self-examination program are characterized in that at least one of the plurality of examination items differs as examination conditions in this subjective eye examination system.

3. In the subjective eye examination system of claim 1 or 2, The first self-examination program and the second self-examination program are characterized in that the examination conditions differ, with the examination targets used in the examination items being different.

4. In the subjective eye examination system of Claim 1, A self-aware eye examination system characterized by comprising setting change means for changing at least one of the examination conditions of the first self-eye examination program and the examination conditions of the second self-eye examination program.

5. In the subjective eye examination system of Claim 1, The system includes an eye examination schedule setting means for setting an eye examination schedule that associates the first self-eye examination program and the second self-eye examination program with a predetermined period of time, The self-examination program setting means is characterized by switching between the first self-examination program and the second self-examination program based on the examination schedule set by the examination schedule setting means.

6. A target presentation means for presenting an examination target to the eye under examination, A correction means for changing the optical properties of the target light beam emitted from the target presentation means, Equipped with, A subjective ophthalmography program used in a subjective ophthalmography system for subjectively measuring the optical properties of the eye being examined, A self-examination program setting step involves setting either a first self-examination program that automatically proceeds with multiple examination items for the eye under examination based on answers entered by the subject, or a second self-examination program that automatically proceeds with multiple examination items for the eye under examination based on answers entered by the subject, but has different examination conditions from the first self-examination program. A control step which controls at least one of the target presentation means and the correction means based on the first self-examination program or the second self-examination program set in the self-examination program setting step, and proceeds with an eye examination in accordance with the procedure of the first self-examination program or the second self-examination program, A subjective eye examination program characterized by the execution of the following: