Optometry system, optometry program, and optometry method

Abstract

To provide an optometry system, an optometry program, and an optometry method capable of progressing temporary frame inspection of a subject with accuracy.SOLUTION: An optometry system for examining an eye to be examined includes first acquisition means for acquiring a first measurement result of an optical characteristic in subjective type measurement of the eye to be examined, second acquisition means for acquiring a second measurement result of an optical characteristic in a trial lens arranged in a trial frame worn by the eye to be examined, comparison means for comparing the first measurement result acquired by the first acquisition means with the second measurement result acquired by the second acquisition means, and output means for outputting notification information related to a deviation between the first measurement result and the second measurement result on the basis of a comparison result of the comparison means.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an optometry system, an optometry program, and an optometry method for examining an eye to be examined. [Background technology]

[0002] In an eye examination of a subject, a subjective test is conducted in which optical characteristics (e.g., ocular refractive power) are measured by presenting a test target to the subject's eye via an optical element, followed by a provisional frame test in which the subject wears trial frames (i.e., provisional frame glasses) with trial lenses set in them to check the wearing comfort. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-149843 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the examiner determines the placement of the trial lens based on the measurement results of the subjective test of the eye to be examined, and manually sets the desired trial lens in the trial frame. This makes it easy for the examiner to insert the trial lens incorrectly, and the examinee may feel uncomfortable with the way the test target appears, which can prevent the provisional frame test from proceeding accurately.

[0005] In view of the above-described conventional techniques, the present disclosure has as its technical object to provide an optometry system, an optometry program, and an optometry method that can accurately conduct a provisional frame examination on a subject. [Means for solving the problem]

[0006] In order to solve the above problems, the present disclosure is characterized by having the following configuration. (1) An optometry system according to a first aspect of the present disclosure is an optometry system for examining an eye to be examined, characterized in that it comprises: a first acquisition means for acquiring a first measurement result of the optical characteristics of the eye to be examined in a subjective measurement; a second acquisition means for acquiring a second measurement result of the optical characteristics of a trial lens placed in a trial frame worn by the eye to be examined; a comparison means for comparing the first measurement result acquired by the first acquisition means with the second measurement result acquired by the second acquisition means; and an output means for outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison means. (2) An optometry program according to a second aspect of the present disclosure is an optometry program used in an optometry system for examining a subject's eye, and is characterized in that the optometry program, when executed by a processor, causes the optometry system to perform the following steps: a first acquisition step of acquiring a first measurement result of the optical characteristics of the subject's eye in a subjective measurement; a second acquisition step of acquiring a second measurement result of the optical characteristics of a trial lens placed in a trial frame worn by the subject's eye; a comparison step of comparing the first measurement result acquired in the first acquisition step with the second measurement result acquired in the second acquisition step; and an output step of outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison step. (3) An eye examination method according to a third aspect of the present disclosure is an eye examination method executed by an eye examination system for examining an eye to be examined, and is characterized by including a first acquisition step of acquiring a first measurement result of the optical characteristics of the eye to be examined in a subjective measurement; a second acquisition step of acquiring a second measurement result of the optical characteristics of a trial lens placed in a trial frame worn by the eye to be examined; a comparison step of comparing the first measurement result acquired in the first acquisition step with the second measurement result acquired in the second acquisition step; and an output step of outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison step. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of an optometric system. [Figure 2] FIG. 2 is a schematic diagram of an eye refractive power measuring unit. [Figure 3] FIG. 2 is a schematic diagram of a support unit and a measurement unit. [Figure 4] 10 is an example of an index pattern. [Figure 5] 10 is an example of a display screen. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Summary> An overview of an optometry system according to an embodiment of the present disclosure will be described. The items grouped in < > below can be used independently or in conjunction with each other.

[0009] The optometry system for examining the subject's eye in this embodiment may include a plurality of optometry devices used in the optometry process. For example, the optometry system may include, as the optometry device, an objective optometry device that objectively measures the optical characteristics of the subject's eye. As an example, it may include an autorefractometer for objectively measuring the ocular refractive power of the subject's eye. For example, the optometry system may include, as the optometry device, a subjective optometry device that subjectively measures the optical characteristics of the subject's eye. As an example, it may include a refractor for subjectively measuring the ocular refractive power of the subject's eye. Furthermore, for example, the optometry system may include, as the optometry device, a spectacle lens measurement device that measures the optical characteristics of a trial lens placed in a trial frame worn by the optometrist.

[0010] <Subjective eye examination device> The subjective optometry device may include a subjective measuring means for measuring optical characteristics of the eye by emitting a visual target light beam toward the eye and changing the optical characteristics of the visual target light beam using a corrective means. For example, the optical characteristics of the visual target light beam may be the spherical power, cylindrical power, astigmatic axis angle, etc. of the visual target light beam. For example, the optical characteristics of the eye may be the ocular refractive power of the eye (for example, the spherical power, cylindrical power, astigmatic axis angle, etc.). Of course, for example, the optical characteristics of the eye may include the contrast sensitivity of the eye, binocular vision function (for example, the amount of heterophoria, stereoscopic vision function, etc.), etc.

[0011] For example, the subjective measurement means may have a subjective measurement optical system as a part of the subjective measurement means. As an example, the subjective measurement optical system may include a light projection optical system that projects a visual target light beam toward the subject's eye, and a corrective optical system that is arranged in the optical path of the light projection optical system and changes the optical properties of the visual target light beam.

[0012] The correcting means (i.e., the corrective optical system) may be configured to change the optical characteristics of the target light beam. For example, the correcting means may optically change the presentation position (presentation distance) of the test target relative to the eye. Alternatively, the correcting means may be an eye refraction measurement unit (e.g., eye refraction measurement unit 112) that places an optical element in front of the eye. For example, the eye refraction measurement unit may include a lens disk on which multiple optical elements are arranged on the same circumference and a driving means (e.g., a motor) for rotating the lens disk, and the optical elements may be electrically switched by driving the driving means. Alternatively, the eye refraction measurement unit may include a variable-focus lens, and the refractive power of the variable-focus lens may be changed. Of course, the eye refraction measurement unit may include both the lens disk, the driving means, and the variable-focus lens.

[0013] The subjective measuring means is not limited to this configuration, and various configurations can be used.

[0014] <Eyeglass lens measuring device> The eyeglass lens measurement device may include an optical characteristic measurement unit that projects a measurement light beam onto the trial lens and receives the measurement light beam that has passed through the trial lens to measure the optical characteristics of the trial lens. For example, the optical characteristics of the trial lens may be the spherical power, cylindrical power, astigmatic axis angle, etc. of the trial lens.

[0015] For example, the optical characteristic measuring means may have a lens measurement optical system (e.g., measurement optical system 320) as a part of the optical characteristic measuring means. As an example, the lens measurement optical system may be configured as a so-called lens meter, which measures the optical characteristics of the trial lens by placing the trial lens on a nosepiece and receiving a measurement light beam that has passed through the trial lens and the nosepiece. Also, as an example, the lens measurement optical system may be configured as a so-called lens checker, which measures the optical characteristics of the trial lens by projecting a measurement light beam as a parallel light beam onto a wide area of the trial lens and receiving the measurement light beam that has passed through the trial lens.

[0016] <First acquisition means> The optometry system of this embodiment may include a first acquisition means (e.g., the control unit 32) that acquires a first measurement result of optical characteristics in subjective measurement of the subject's eye. For example, the first acquisition means may acquire at least one of a measurement value of the spherical power of the subject's eye, a measurement value of the cylindrical power, a measurement value of the astigmatic axis angle, etc.

[0017] For example, the first acquisition means may acquire the first measurement result input by the operator operating the operation means (for example, the display unit 31). Also, for example, the first acquisition means may acquire the first measurement result by receiving measurement data measured using a subjective optometry device.

[0018] <Second acquisition means> The optometry system of this embodiment may include a second acquisition means (e.g., the control unit 32) that acquires second measurement results of optical characteristics of a trial lens placed in a trial frame worn by the subject's eye. For example, the second acquisition means may acquire at least one of a measurement value of the spherical power of the trial lens, a measurement value of the cylindrical power, a measurement value of the astigmatic axis angle, etc.

[0019] For example, the second acquisition means may acquire the second measurement result input by the operator operating the operation means. Also, for example, the second acquisition means may acquire the second measurement result by receiving measurement data measured using an eyeglass lens measurement device.

[0020] For example, when measurement data is sequentially obtained at predetermined time intervals using the eyeglass lens measurement device, the second acquisition means may acquire the second measurement result each time. In other words, for example, the second acquisition means may acquire the second measurement result of the trial lens in real time.

[0021] <Means of comparison> The optometry system of this embodiment may include a comparison unit (e.g., the control unit 32) that compares the first measurement result acquired by the first acquisition unit with the second measurement result acquired by the second acquisition unit. For example, the comparison unit may compare the first measurement result acquired by the first acquisition unit with the second measurement result acquired by the second acquisition unit to obtain a detection result as to whether the respective measurement results are the same. Furthermore, for example, the comparison unit may compare the first measurement result acquired by the first acquisition unit with the second measurement result acquired by the second acquisition unit to obtain a detection result as to whether the second measurement result falls within an allowable range set for the first measurement result. This allows the examiner to easily complete the adjustment of the trial lenses in the temporary frame spectacles.

[0022] For example, the tolerance range set for the first measurement result in the subjective measurement of the eye to be examined may be a constant tolerance range regardless of the type of optical characteristic of the eye to be examined (e.g., spherical power, cylindrical power, or astigmatic axis angle). For example, a constant arbitrary tolerance range may be set regardless of the type of optical characteristic of the eye to be examined. For example, the tolerance range may be set with a step width in which each measurement value changes by one step, regardless of the type of optical characteristic of the eye to be examined. As an example, since the spherical power and cylindrical power of the eye to be examined change in 0.25D increments, a tolerance range of ±0.25D may be set for each. As another example, since the astigmatic axis angle of the eye to be examined changes in 1-degree increments, a tolerance range of ±1 degree may be set.

[0023] Furthermore, for example, the tolerance range set for the first measurement result in the subjective measurement of the eye to be examined may vary depending on the type of optical characteristics of the eye to be examined. For example, different tolerance ranges may be set depending on the type of optical characteristics of the eye to be examined. For example, the tolerance range may be set with different step widths depending on the type of optical characteristics of the eye to be examined. As an example, the tolerance range may be set with one step width for the spherical power of the eye to be examined (i.e., ±0.25D), two steps for the cylindrical power (i.e., ±0.50D), five steps for the astigmatic axis angle (i.e., ±5 degrees), etc.

[0024] Furthermore, for example, the tolerance set for the first measurement result in the subjective measurement of the eye to be examined may be a constant tolerance range regardless of the magnitude of the first measurement result. For example, the tolerance range for the spherical power of the first measurement result of the eye to be examined may be ±0.125D regardless of the measured value. As an example, if the spherical power of the eye to be examined is −1.00D, the spherical power of the trial lens may be −0.875 to −1.125D, and if the spherical power of the eye to be examined is −3.00D, the spherical power of the trial lens may be −2.875 to −3.125D. For example, the tolerance range for the cylindrical power of the first measurement result of the eye to be examined may be ±0.125D regardless of the measured value. For example, if the cylindrical power of the subject's eye is -1.25D, the cylindrical power of the trial lens should be between -1.125D and -1.375D. If the cylindrical power of the subject's eye is -3.50D, the cylindrical power of the trial lens should be between -3.375D and -3.625D. Furthermore, for example, the tolerance range for the astigmatic axis angle of the first measurement result of the subject's eye may be ±2 degrees regardless of the measurement value. For example, if the astigmatic axis angle of the subject's eye is 45 degrees, the astigmatic axis angle of the trial lens should be between 43 and 47 degrees. If the astigmatic axis angle of the subject's eye is 100 degrees, the astigmatic axis angle of the trial lens should be between 98 and 102 degrees. Of course, values other than these tolerance ranges may also be applied.

[0025] Furthermore, for example, the tolerance range set for the first measurement result in the subjective measurement of the eye to be examined may vary depending on the magnitude of the first measurement result. For example, a different tolerance range may be applied to the spherical power of the first measurement result of the eye to be examined depending on its measurement value. For example, different tolerance ranges may be set depending on whether the spherical power exceeds a predetermined threshold or is equal to or less than the predetermined threshold. For example, a different tolerance range may be applied to the cylindrical power of the first measurement result of the eye to be examined depending on its measurement value. For example, different tolerance ranges may be set depending on whether the cylindrical power exceeds a predetermined threshold or is equal to or less than the predetermined threshold. For example, a different tolerance range may be applied to the astigmatic axis angle of the first measurement result of the eye to be examined depending on its measurement value. For example, different tolerance ranges may be set depending on whether the astigmatic axis angle exceeds a predetermined threshold or is equal to or less than the predetermined threshold.

[0026] In this embodiment, the tolerance range set for the first measurement result may vary based on at least one of the type of optical characteristics of the test eye and the magnitude of the measurement value in the first measurement result of the subjective measurement of the test eye. For example, the difference between the first measurement result and the second measurement result is greatly affected by the type of optical characteristics, so by setting a tolerance range depending on the type of optical characteristics, it is possible to smoothly complete the adjustment of the trial lens while maintaining a certain level of accuracy. Furthermore, for example, the larger the measurement value of the difference between the first measurement result and the second measurement result, the greater the impact on the provisional frame test. Therefore, by setting a tolerance range depending on the magnitude of the measurement value, it is possible to smoothly complete the adjustment of the trial lens while maintaining a certain level of accuracy.

[0027] <Output method> The optometry system of this embodiment may include an output means (for example, the control unit 32) that outputs notification information regarding a discrepancy between the first measurement result and the second measurement result based on the comparison result of the comparison means. This allows the examiner to easily find an incorrect trial lens placement that occurs when performing a provisional frame test on the subject's eye. Furthermore, by taking appropriate measures such as replacing the trial lens, the examiner can proceed with the subsequent provisional frame test with high accuracy.

[0028] For example, the output means may output the notification information based on a detection result of whether the first measurement result and the second measurement result are the same measurement value. Furthermore, for example, the output means may output the notification information based on a detection result of whether the second measurement result falls within an allowable range set based on the first measurement result. This allows the examiner to easily complete the adjustment of the trial lenses for the temporary frame eyeglasses.

[0029] For example, the output means may generate and output notification information regarding the deviation between the first measurement result and the second measurement result in real time. More specifically, when the second measurement result of the trial lens is acquired in real time by the second acquisition means and the first measurement result of the test eye and the second measurement result of the trial lens are compared in real time by the comparison means, the output means may generate and output notification information in real time based on the deviation between the first measurement result and the second measurement result, which changes from time to time. This allows the examiner to constantly grasp the degree of deviation between the first measurement result and the second measurement result, while simultaneously checking the second measurement result and adjusting the trial lens. This reduces the hassle of performing measurements every time the trial lens is changed, and allows the trial lens adjustment to be completed efficiently.

[0030] For example, the output means may output notification information regarding a deviation between the spherical power in the first measurement result and the spherical power in the second measurement result. Furthermore, for example, the output means may output notification information regarding a deviation between the cylindrical power in the first measurement result and the cylindrical power in the second measurement result. Furthermore, for example, the output means may output notification information regarding a deviation between the astigmatic axis angle in the first measurement result and the astigmatic axis angle in the second measurement result. For example, the spherical power and cylindrical power in the first measurement result of the subject's eye vary in increments of 0.25D, but the spherical lenses and cylindrical lenses in the trial frame are prepared in increments of 0.25D, so deviations between these are easy to notice. On the other hand, for example, the astigmatic axis angle in the first measurement result of the subject's eye is in increments of 1 degree, but the scale on the trial frame is marked in increments of 5 degrees, so deviations between these are difficult to notice. Therefore, in this embodiment, the output means may be configured to output notification information regarding at least deviations in the astigmatic axis angle. By checking such notification information, the examiner can easily find deviations in the astigmatic axis angle that occur when performing a provisional frame test on the subject's eye.

[0031] For example, the output means may output notification information to allow the examiner to understand the discrepancy between the first measurement result and the second measurement result. For example, in this case, the notification information may be information to notify that the first measurement result and the second measurement result are the same measurement value, or that the second measurement result is within an acceptable range. Furthermore, for example, in this case, the notification information may be information to notify that the first measurement result and the second measurement result are different measurement values, or that the second measurement result is not within an acceptable range. For example, such notification information may be at least one of a message or illustration indicating whether or not there is a discrepancy between the measurement results or whether or not they are within an acceptable range, highlighting the screen or measurement value (for example, blinking, changing the color, changing the font, etc.), adding a sign (for example, a badge or other mark), etc.

[0032] For example, the output means may output notification information for the examiner to correct the discrepancy between the first measurement result and the second measurement result. In this case, the notification information may be information for guiding the examiner to make the second measurement result coincide with the first measurement result or to keep the second measurement result within an acceptable range. For example, such notification information may be a message or illustration instructing the examiner on an action.

[0033] For example, the output means may control a display means and cause the display means to display the notification information. Also, for example, the output means may control a printing means and cause the printing means to print the notification information. Also, for example, the output means may control an external storage means and send the notification information to the external storage means. Also, for example, the output means may control a sound generation means (for example, a speaker) and cause the sound generation means to generate the notification information as sound. Of course, for example, the output means may execute a control that combines these, or may execute a control different from these.

[0034] The present disclosure is not limited to the optometry system described in the present embodiment. For example, terminal control software (programs) that perform the functions of the above-described 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.

[0035] Furthermore, the optometry system of the above-described embodiment may execute an optometry method for examining the subject's eye. For example, the optometry method may include a first acquisition step of acquiring a first measurement result of optical characteristics of the subject's eye in a subjective measurement, a first acquisition step of acquiring a second measurement result of optical characteristics of a trial lens placed in a trial frame worn by the subject's eye, a comparison step of comparing the first measurement result acquired in the first acquisition step with the second measurement result acquired in the second acquisition step, and an output step of outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison step.

[0036] For example, if the optometry system has a subjective optometry device, the optometry method (i.e., the first obtaining step, the second obtaining step, the comparing step, and the output step) may be performed in the subjective optometry device. Also, for example, if the optometry system has a spectacle lens measuring device, the optometry method may be performed in the spectacle lens measuring device. Also, for example, if the optometry system has a subjective optometry device and a spectacle lens measuring device, the optometry method may be performed in either the subjective optometry device or the spectacle lens measuring device.

[0037] <Example> An example of the optometry system according to this embodiment will be described.

[0038] 1 is a schematic diagram of an optometry system 1. For example, the optometry system 1 includes a plurality of optometry devices used in the optometry process of examining the subject's eyes. For example, the optometry system 1 includes a subjective optometry device 10, an objective optometry device 20, an eyeglass lens measurement device 30, and the like.

[0039] For example, the subjective ophthalmoscope 10, the objective ophthalmoscope 20, and the eyeglass lens measurement device 30 are provided with a communication unit (not shown) and are connected via a wired or wireless network 5. For example, a shared folder 6 accessible from each device may be created on the network 5. Also, for example, a memory 7 accessible from each device may be connected to the network 5.

[0040] <Subjective eye examination device> For example, the subjective optometry device 10 is used in a process of subjectively measuring the optical characteristics of the subject's eye. For example, the subjective optometry device 10 may have a subjective measurement optical system that includes a light projection optical system that projects a visual target light beam toward the subject's eye, and a corrective optical system that is disposed in the optical path of the light projection optical system and changes the optical characteristics of the visual target light beam. For example, the subjective optical characteristics of the subject's eye that are measured include ocular refractive power (e.g., spherical power, cylindrical power, astigmatic axis angle, etc.).

[0041] For example, the subjective ophthalmology device 10 includes a main body 11 and a controller 12. For example, the main body 11 includes a main body 111 that houses a light projection optical system, an eye refractive power measurement unit 112 that houses a correction optical system, a control unit 113, and the like.

[0042] 2 is a schematic diagram of the eye refractive power measuring unit 112. The refractive power measuring unit 112 includes a forehead rest 130, a lens unit 140, an examination window 160, a moving unit 170, etc. The forehead rest 130 fixes the subject's eye at a predetermined examination position and keeps the distance from the subject's eye to the examination window 160 constant.

[0043] Lens unit 140 has a pair of left and right lens units (left lens unit 140L and right lens unit 140R). Each lens unit has a lens disk 150 (left lens disk 150L and right lens disk 150R) inside. Each lens disk is rotated by driving unit 151 (left driving unit 151L and right driving unit 151R). Each lens disk also has an aperture (or a 0D lens) and multiple optical elements 155 (left optical element 155L and right optical element 155R) arranged on the same circumference. Each optical element is rotated by driving unit 156 (left driving unit 156L and right driving unit 156R). As a result, the desired optical element is switched and positioned in inspection window 160 (left inspection window 160L and right inspection window 160R) at the desired angle.

[0044] The lens disk 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). Also, as an example, the cylindrical lens disk may have multiple cylindrical lenses with different cylindrical powers (cylindrical refractive powers). Also, as an example, the auxiliary lens disk may have a shielding plate, a polarizing filter, a red filter / green filter, a dispersion prism, a Maddox lens, a rotary prism, a cross cylinder lens, an autocross cylinder lens, an alignment lens, etc.

[0045] Movement unit 170 adjusts the distance between left lens unit 140L and right lens unit 140R and the convergence angle (inward angle) between left lens unit 140L and right lens unit 140R. Left lens unit 140L and right lens unit 140R are moved in the left-right direction by driving of drive unit 171 (left drive unit 171L and right drive unit 171R). In addition, the angle of left lens unit 140L and right lens unit 140R is changed in the front-back direction by driving of drive unit 172.

[0046] Returning to FIG. 1, the control unit 113 includes a general CPU, RAM, ROM, etc. The CPU controls the driving of each part of the subjective optometry device 10. The RAM temporarily stores various types of information. The ROM stores various programs executed by the CPU, etc. The control unit 113 may be configured by multiple control units.

[0047] The controller 12 is used to perform a subjective examination of the subject's eye. For example, the controller 12 includes an operation unit 121, a display unit 122, a control unit 123, etc. The operation unit 121 outputs operation signals for performing various settings of the subjective optometry device 10. The operation unit 121 may be a touch panel that also functions as the display unit 122. The display unit 122 displays various information of the subjective optometry device 10. The control unit 123 includes a general CPU, RAM, ROM, etc. The CPU is responsible for overall control of the controller 12. The RAM temporarily stores various information. The ROM stores various programs executed by the CPU, etc. The control unit 123 may be composed of multiple control units.

[0048] An operation signal input by an operator operating the operation unit 121 of the controller 12 is output from the operation unit 121 to the control unit 123. Furthermore, the operation signal is output from the control unit 123 of the controller 12 to the control unit 113 in the main body 11 via the network.

[0049] <Objective ophthalmology device> For example, the objective ophthalmological examination device 20 is used in a process of objectively measuring the optical characteristics of the subject's eye. For example, the objective ophthalmological examination device 20 may have an objective measurement optical system 21 that is configured by a light projecting optical system that projects a measurement light beam onto the fundus of the subject's eye and a light receiving optical system that receives a reflected light beam from the fundus of the subject's eye. For example, the ocular refractive power (e.g., spherical power, cylindrical power, astigmatic axis angle, etc.) is measured as the objective optical characteristics of the subject's eye.

[0050] Furthermore, for example, the objective ophthalmological examination device 20 includes a control unit 22. The control unit 22 includes a general CPU, RAM, ROM, etc. The CPU is responsible for overall control of the objective ophthalmological examination device 20. The RAM temporarily stores various types of information. The ROM stores various programs executed by the CPU, etc. The control unit 22 may be configured with multiple control units.

[0051] <Eyeglass lens measuring device> For example, the eyeglass lens measurement device 30 is used in a process of measuring the optical characteristics of eyeglasses (eyeglass lenses) worn by a subject. For example, the eyeglass lens measurement device 30 may have a measurement optical system (described later) that is configured with a light projecting optical system that projects a measurement light beam toward the eyeglass lens and a light receiving optical system that receives the measurement light beam that has passed through the eyeglass lens. For example, the optical characteristics of the eyeglass lens that are measured include refractive power (e.g., spherical power, cylindrical power, astigmatic axis angle, etc.).

[0052] Furthermore, for example, the eyeglass lens measurement device 30 includes an operation unit 31. The operation unit 31 outputs operation signals for performing various settings of the eyeglass lens measurement device 30. The operation unit 31 is a touch panel that also serves as a display unit, and displays various information of the eyeglass lens measurement device 30 (for example, the optical characteristics and optical characteristic distribution of the eyeglass lens).

[0053] Furthermore, for example, the eyeglass lens measurement device 30 includes a control unit 32. The control unit 32 includes a general CPU (processor), RAM, ROM, etc. The CPU is responsible for overall control of the eyeglass lens measurement device 30. The RAM temporarily stores various types of information. The ROM stores various programs executed by the CPU, etc. The control unit 32 may be configured by multiple control units (i.e., multiple processors).

[0054] The housing of the eyeglass lens measurement device 30 accommodates a support unit 310, a measurement unit, and the like. FIG. 3 is a schematic diagram of the support unit 310 and the measurement unit. The support unit 310 is used to place the temporary frame eyeglasses. For example, the support unit 310 includes a positioning pin 311, a front support portion 312, a rear support portion 313, and the like. The positioning pin 311 abuts against the rear surface of the trial lens placed on the trial frame. The positioning pin 311 also maintains a constant positional relationship between the trial lens and a transmissive display 324 (described later), and also maintains a constant positional relationship between the trial lens and an imaging element 327 (described later). The front support portion 312 supports a portion of the trial frame that is forward of the center in the anterior-posterior direction. For example, the front support portion 312 may support a bridge FB of the trial frame. The rear support portion 313 supports a portion of the trial frame that is rearward of the center in the anterior-posterior direction. For example, the rear support portion 313 may support a temple FT of the trial frame.

[0055] The measurement unit includes a measurement optical system 320 for measuring the optical characteristics of the trial lens. For example, the measurement optical system 320 includes a light source 325, a transmissive display 324, a collimator lens 323, an image sensor 327, and the like.

[0056] The light source 325 irradiates the measurement light beam toward the trial lens. For example, the light source 325 may serve as both a light source for irradiating the measurement light beam onto the left lens and a light source for irradiating the measurement light beam onto the right lens. For example, the light source 325 may be a display such as an LCD. The transmissive display 324 is a display with high transmittance that can transmit the measurement light beam from the light source 325. The transmissive display 324 has a first transmissive display 324a and a second transmissive display 324b arranged at a predetermined distance in the optical axis direction. The collimator lens 323 shapes the measurement light beam from the light source 325 to be parallel (approximately parallel) to the optical axis. The collimator lens 323 has a collimator lens 323L that shapes the measurement light beam irradiated onto the left lens and a collimator lens 323R that shapes the measurement light beam irradiated onto the right lens. The imaging element 327 captures an image of the measurement light beam irradiated onto the trial lens. The image pickup element 327 includes an image pickup element 327L that picks up an image of the measurement light beam irradiated onto the left lens, and an image pickup element 327R that picks up an image of the measurement light beam irradiated onto the right lens.

[0057] The transmissive display 324 can display or hide an index pattern 350 used to measure the optical characteristics of the trial lens. Fig. 4 shows an example of the index pattern 350. Fig. 4(a) shows a first index pattern 350a displayed on the first transmissive display 324a. Fig. 4(b) shows a second index pattern 350b displayed on the second transmissive display 324b.

[0058] First, the first index pattern 350a will be described. The first index pattern 350a has indices 355a consisting of peripheral indices 352a and reference indices 353a. For example, the peripheral indices 352a are provided around the reference indices 353a in advance with a predetermined shape, predetermined position, and predetermined number, etc. For example, the peripheral indices 352a are circular, and a plurality of them are provided at equal intervals based on the position where the optical axes NL and NR pass. For example, the reference indices 353a are provided in advance with a predetermined shape, predetermined position, predetermined number, etc. so that they can be distinguished from the peripheral indices 352a. For example, the reference indices 353a are circular, larger than the peripheral indices 352a, and are provided symmetrically in the up / down and left / right directions based on the position where the optical axes NL and NR pass.

[0059] Next, the second index pattern 350b will be described. For example, the second index pattern 350b has indices 355b consisting of peripheral indices 352b and reference indices 353b. For example, the peripheral indices 352b are provided around the reference indices 353b in advance with a predetermined shape, predetermined position, and predetermined number, etc. For example, the peripheral indices 352b are rectangular, and a plurality of them are provided at equal intervals based on the position where the optical axes NL and NR pass. For example, the reference indices 353b are provided in advance with a predetermined shape, predetermined position, predetermined number, etc. so that they can be distinguished from the peripheral indices 352b. For example, the reference indices 353b are rectangular, larger than the peripheral indices 352b, and are provided symmetrically in the up-down and left-right directions based on the position where the optical axes NL and NR pass.

[0060] In this embodiment, the image sensor 327 is disposed on the front side of the trial lens, and the light source 325, the first transmissive display 324a, the second transmissive display 324b, and the light source 325 are disposed on the rear side of the trial lens. Of course, the measurement optical system 320 is not limited to this configuration, and various configurations can be used.

[0061] <Control action> The control operation of the optometry system having the above configuration will be described.

[0062] The examiner can perform objective measurement of the subject's eye in advance by operating the objective optometry device 20, and store the test results (in other words, objective data) in the shared folder 6. Similarly, the examiner can measure the optical characteristics of the spectacle lenses worn by the subject in advance by operating the spectacle lens measurement device 30, and store the measurement results (in other words, previous spectacle data) in the shared folder 6.

[0063] <Subjective testing> The examiner performs subjective measurement of the subject's eye by operating the subjective optometry device 10. For example, the examiner operates the controller 12 to set at least one of objective data and previous eyeglasses data as the initial value of the correction power for correcting the subject's eye. For example, the control unit 123 of the controller 12 accesses the shared folder 6 and calls at least one of the objective data and previous eyeglasses data in response to an operation signal. For example, the control unit 123 of the main body 11 controls the eye refractive power measurement unit 112 based on at least one of the objective data and previous eyeglasses data, and places a spherical lens or a cylindrical lens in the examination window. As a result, the subject's eye is corrected with a predetermined correction power (for example, spherical power, cylindrical power, and astigmatism axis angle).

[0064] The examiner performs subjective measurements of the subject's eye, sequentially through a spherical test, an astigmatism test, a visual acuity test, and so on. For example, the spherical test uses a red-green target to adjust the initial spherical power of the subject's eye to an appropriate spherical power. For example, the astigmatism test uses a point cloud target to adjust the initial cylindrical power and astigmatic axis angle of the subject's eye to an appropriate cylindrical power and astigmatic axis angle. For example, the visual acuity test uses a Landolt ring target to measure the best visual acuity value of the subject's eye after correcting it with the appropriate spherical power, cylindrical power, and astigmatic axis angle. For details of each test, please refer to, for example, Japanese Patent Application Laid-Open No. 2022-97128.

[0065] When the examiner has completed a series of tests on the subject's eye, he or she ends the subjective measurement. For example, the most positive correction power (spherical power, cylindrical power, astigmatic axis angle, etc.) that provides the subject's eye with the best visual acuity is acquired as the full correction value. Alternatively, for example, a correction power that provides the subject's eye with a predetermined visual acuity and that is used when prescribing spectacles (i.e., a prescription value) is acquired. The examiner also operates the controller 12 to store at least one of the full correction value and the prescription value. The control unit 123 of the controller 12 stores at least one of the full correction value and the prescription value in the shared folder 6 in response to an operation signal.

[0066] <Temporary frame inspection> Next, the examiner performs a provisional frame test on the subject's eye. For example, the provisional frame test is a test to determine the final prescription value to be used when prescribing eyeglasses by checking the wearing comfort of the subject wearing a trial frame with trial lenses set in it.

[0067] In this embodiment, for convenience, it is assumed that the subject's left and right eyes have the same full correction value or prescription value in the subjective test. The examiner selects desired trial lenses based on the full correction value or prescription value of the subject's eye and places each trial lens in the trial frame. For example, if the subject's prescription value is -3.00D spherical power, -1.25D cylindrical power, and an astigmatism axis angle of 120 degrees, the examiner places a -3.00D spherical lens and a -1.25D cylindrical lens in the trial frame and then rotates the cylindrical lens to align its axis with the 120-degree scale M.

[0068] However, examiners often make mistakes when selecting and positioning trial lenses. For example, trial lenses consist of at least several spherical lenses and several cylindrical lenses. For example, spherical lenses are available in a range of -20.00D to +20.00D with a ±0.25D offset, while cylindrical lenses are available in a range of -5.00D to +5.00D with a ±0.25D offset. This requires examiners to find the desired lens from a large number of lenses, making selection errors more likely. Furthermore, for example, trial frames have a scale M for adjusting the astigmatic axis angle. However, because this scale M is small and difficult to see, it is easy to misalign the axis of the cylindrical lens. Furthermore, while the prescription value for the astigmatic axis angle of the test eye is obtained in 1-degree increments, the scale M is marked in 5-degree increments. This makes it particularly easy to misalign the axis of the cylindrical lens between the scales.

[0069] Therefore, before starting a provisional frame inspection of the subject's eye, the examiner measures a trial frame in which a desired trial lens is placed using the eyeglass lens measuring device 30. For example, the examiner places the trial frame on the support unit 310 (the front support portion 312 and the rear support portion 313). Furthermore, for example, the examiner operates the display unit 31 to start measuring the optical characteristics of the trial lens. In response to an operation signal from the display unit 31, the control unit 32 turns on the light source 325, switches between displaying and hiding index patterns on the first transmissive display 324a and the second transmissive display 324b, and acquires an image captured by the image sensor 327.

[0070] For example, the control unit 32 acquires, as the first reference image, a captured image including only the image of the first index pattern 350a, which is captured by displaying the first index pattern 350a on the first transmissive display 324a and hiding the second index pattern 350b on the second transmissive display 324b without placing the trial frame on the support unit 310. Then, for example, the control unit 32 acquires, as the first measurement image, a captured image including the image of the trial frame and the trial lens and the image of the first index pattern 350a, which is captured by placing the trial frame on the support unit 310 and displaying the first index pattern 350a and hiding the second index pattern 350b. Similarly, for example, the control unit 32 acquires, as a second reference image, a captured image including only an image of the second index pattern 350b, which is captured by not placing the trial frame on the support unit 310, hiding the first index pattern 350a on the first transmissive display 324a, and displaying the second index pattern 350b on the second transmissive display 324b. Furthermore, for example, the control unit 32 acquires, as a second measurement image, a captured image including images of the trial frame and the trial lens and an image of the second index pattern 350b, which is captured by placing the trial frame on the support unit 310, hiding the first index pattern 350a, and displaying the second index pattern 350b.

[0071] The control unit 32 calculates the optical characteristics of the trial lens using each reference image and each measurement image. For example, the control unit 32 calculates the optical characteristics of the trial lens using the interval between the images of the index 355a forming the image of the first index pattern 350a, the interval between the images of the index 355b forming the image of the second index pattern 350b, etc. For details, please refer to Japanese Patent Application Laid-Open No. 2021-105572, etc. In this way, the optical characteristics of the trial lens (e.g., spherical power, cylindrical power, astigmatic axis angle, etc.) are acquired.

[0072] Furthermore, the examiner operates the display unit 31 to set prescription values, which are the results of the subjective measurement of the eye to be examined. For example, the control unit 32 accesses the shared folder 6 and calls up the prescription values in response to an operation signal. This allows the prescription values of the eye to be obtained (for example, spherical power, cylindrical power, astigmatic axis angle, etc.).

[0073] In this example, the prescription values for the subject's eye are -3.00D spherical power, -1.25D cylindrical power, and 120° astigmatism axis angle. However, a +3.00D spherical lens and a -1.25D cylindrical lens are placed in the trial frame, and the axis of the cylindrical lens is aligned with the 100° scale M. When the control unit 32 acquires the prescription values for the subject's eye and the optical characteristics of the trial lens, it compares the prescription values with the optical characteristics and acquires the comparison result. For example, the control unit 32 compares the prescription values for the subject's eye with the optical characteristics of the trial lens to detect whether the prescription values and the optical characteristics match. As an example, when the prescription values and the optical characteristics are the same (i.e., when the difference between the prescription values and the optical characteristics is 0), the control unit 32 acquires a detection result indicating that they match. More specifically, if the spherical power, cylindrical power, and astigmatic axis angle in both the prescription value and the optical characteristics are the same, a detection result indicating that they match may be obtained. Furthermore, as an example, if the prescription value and the optical characteristics are different values (i.e., if the difference between the prescription value and the optical characteristics is not 0), the control unit 32 obtains a detection result indicating that they do not match. More specifically, if at least one of the spherical power, cylindrical power, and astigmatic axis angle in both the prescription value and the optical characteristics is different, a detection result indicating that they do not match may be obtained. Therefore, in this embodiment, a detection result indicating that the prescription value and the optical characteristics do not match is obtained as a comparison result of the comparison process between the prescription value of the eye to be examined and the optical characteristics of the trial lens.

[0074] FIG. 5 illustrates an example of a display screen 360 of the display unit 31. For example, the display screen 360 displays a prescription value 362 of the subject's eye, optical characteristics 364 of the trial lens, and a captured image 366 of the trial frame and the trial lens. For example, the prescription value 362 of the subject's eye and the optical characteristics 364 of the trial lens are displayed so as to be comparable. Here, the comparison is made possible by arranging various prescription values 362 and optical characteristics 364 side by side. However, the comparison may also be made possible by switching various prescription values 362 and optical characteristics 364. For example, the captured image 366 is a captured image of the trial frame and the trial lens placed on the support unit 310, captured with the transmissive display 324 hidden. As an example, the captured image 366 may be a single captured image captured during measurement of the optical characteristics of the trial lens. As another example, the captured image 366 may be a real-time captured image (i.e., a moving image) captured as needed during measurement of the optical characteristics of the trial lens.

[0075] The control unit 32 outputs notification information regarding a deviation between the prescription value and the optical characteristics based on a comparison result (e.g., a detection result) between the prescription value of the eye to be examined and the optical characteristics of the trial lens. For example, based on a detection result indicating that the prescription value and the optical characteristics do not match, the control unit 32 displays a warning indicating that there is a deviation between the prescription value and the optical characteristics on the display unit 31 as notification information.

[0076] For example, if there is a discrepancy between the prescription value 362 of the subject's eye and the optical characteristics 364 of the trial lens, the control unit 32 issues an alert by displaying a message 371 prompting the examiner to check the trial lens. Furthermore, if there is a discrepancy between the prescription value 362 of the subject's eye and the optical characteristics 364 of the trial lens, the control unit 32 issues an alert by highlighting each value. As an example, the alert may be issued by applying at least one of the following processes to the prescription value 362 and the optical characteristics 364: changing the text color, making the text bold or italic, or adding an underline. Of course, the alert may also be issued by adding a mark such as a badge to the values of the prescription value 362 and the optical characteristics 364. In this embodiment, the spherical power and the astigmatic axis angle of the prescription value 362 and the optical characteristics 364 are different from each other, so the text color of these values is changed and an underline is added.

[0077] Furthermore, for example, the control unit 32 superimposes the prescription value 362 of the eye to be examined and the astigmatic axis angle of the optical characteristics 364 of the trial lens on the captured image 366. For example, the astigmatic axis angle of the prescription value 362 is superimposed by a dotted line 375, and the astigmatic axis angle of the optical characteristics 364 is superimposed by a solid line 377. In this embodiment, the astigmatic axis angle of the prescription value 362 is 120 degrees, and the astigmatic axis angle of the trial lens is 100 degrees, so the dotted line 375 and the solid line 377 are superimposed so as to match the respective scales M with the center of the trial lens as the reference.

[0078] The examiner can easily check whether there is an error in the selection or placement of the trial lens set in the trial frame by checking the display unit 31 of the eyeglass lens measuring device 30. If the selection or placement of the trial lens is incorrect, the examiner can simply replace or move the trial lens, and then measure the trial lens again to confirm that the trial lens is set correctly.

[0079] The examiner begins the trial frame test on the subject's eye using the trial frame (and trial lens). For example, the examiner has the subject wear the trial frame, and while changing the trial lens, the examiner asks the subject how well the test target is seen, etc., to confirm the wearing comfort. In addition, for example, the examiner determines the optical characteristics of the final trial lens for the subject as the final prescription values to be used for prescribing spectacles for the subject's eye.

[0080] The examiner operates the controller 12 of the subjective optometry device 10 to change the prescription value of the eye to the final prescription value after completing the temporary frame test of the eye to be examined. For example, the control unit 123 of the controller 12 saves the final prescription value in the shared folder 6 or the memory 7 in response to an operation signal. Of course, the examiner may measure the trial frame (and the trial lens) using the eyeglass lens measuring device 30 after completing the temporary frame test of the eye to be examined. In this case, the control unit 32 of the eyeglass lens measuring device 30 may obtain the measurement result of the trial lens as the final prescription value and save this measurement result (i.e., the final prescription value) in the shared folder 6 or the memory 7.

[0081] In the above description, whether or not the prescription value 362 of the subject's eye and the optical characteristics 364 of the trial lens match is detected when comparing the respective values. However, it is possible to set a tolerance range in such a comparison process. For example, a certain tolerance range may be applied regardless of the prescription value of the subjective measurement of the subject's eye. Also, for example, a different tolerance range may be set based on the prescription value of the subjective measurement of the subject's eye.

[0082] For example, regardless of the measured value of spherical power in the subjective measurement of the eye, a tolerance range of ±0.25D may be set for the spherical power. Also, regardless of the cylindrical power in the subjective measurement of the eye, a tolerance range of ±0.25D may be set for the cylindrical power. Also, depending on the cylindrical power in the subjective measurement of the eye, different tolerance ranges may be set for the astigmatic axis angle. As an example, if the cylindrical power in the subjective measurement of the eye is "0.50D or less," "more than 0.50D but less than 0.75D," and "more than 0.75D," respectively, tolerance ranges of "±3 degrees," "±2 degrees," and "±1 degree" may be set for the astigmatic axis angle.

[0083] For example, the control unit 32 of the eyeglass lens measurement device 30 may detect whether the optical characteristic 364 falls within an allowable range as a comparison process between the prescription value 362 of the eye to be examined and the optical characteristic 364 of the trial lens. Furthermore, for example, when the control unit 32 acquires a detection result that the optical characteristic 364 does not fall within the allowable range, the control unit 32 may display a message 371, an alert such as a highlighted display, a dotted line 375 and a solid line 377 (i.e., a deviation of the astigmatic axis angle), or the like on the display screen 360.

[0084] In the above example, the examiner measures the optical characteristics of the trial lens again after replacing or moving the trial lens set in the trial frame. However, measurements may be performed in real time. For example, the examiner places the trial frame on the support unit 310 and measures the optical characteristics of the trial lens. For example, the control unit 32 keeps the light source 325 on and repeatedly switches between displaying and hiding the index patterns on the first transmissive display 324a and the second transmissive display 324b at regular intervals, thereby acquiring images captured by the image sensor 327 in real time. Furthermore, for example, the control unit 32 may compare the subjective measurement prescription value 362 of the subject's eye with the optical characteristics 364 of the trial lens in real time, thereby displaying a message 371, an alert such as a highlighted display, a dotted line 375 and a solid line 377 (i.e., a deviation in the astigmatic axis angle), and the like on the display screen 360 in real time.

[0085] Furthermore, for example, the examiner may change the position of the trial lens as needed while the trial frame remains mounted on the support unit 310. At this time, the optical characteristics 364 of the trial lens change each time as real-time measurement results are reflected. Also, the message 371, alerts such as highlighting, the positions of the dotted line 375 and the solid line 377, and the like change each time as comparison results obtained by a comparison process using real-time measurement results are reflected.

[0086] If there is a discrepancy between the astigmatic axis angle of the prescription value 362 for the eye to be examined and the astigmatic axis angle of the optical characteristic 364 of the trial lens, the solid line 377 indicating the astigmatic axis angle of the trial lens will follow the movement by moving the axis of the cylindrical lens in the trial lens. Therefore, the examiner can easily adjust the astigmatic axis angle by checking the display unit 31 instead of the scale M on the trial frame. More specifically, the solid line 377 indicating the astigmatic axis angle of the optical characteristic 364 of the trial lens may be moved closer to the dotted line 375 indicating the astigmatic axis angle of the prescription value 362 for the eye to make the dotted line 375 and the solid line 377 coincide (approximately coincide).

[0087] As described above, for example, the optometry system of this embodiment acquires a first measurement result of the optical characteristics of the subject's eye in a subjective measurement, acquires a second measurement result of the optical characteristics of a trial lens placed in a trial frame worn by the subject's eye, compares the first measurement result with the second measurement result, and outputs notification information regarding a discrepancy between the first measurement result and the second measurement result based on the comparison result. This allows the examiner to easily discover errors such as incorrect placement of the trial lens when performing a trial frame test on the subject's eye. Furthermore, by taking appropriate measures such as replacing the trial lens, the examiner can accurately proceed with the subsequent trial frame test.

[0088] Furthermore, for example, the optometry system of this embodiment obtains a detection result as a result of comparing a first measurement result of the optical characteristics of the subjective measurement of the eye to a second measurement result of the optical characteristics of the trial lens, indicating whether the second measurement result falls within an allowable range set based on the first measurement result, and outputs notification information based on the detection result. This allows the examiner to easily complete the adjustment of the trial lens for the temporary frame spectacles.

[0089] Furthermore, for example, the optometry system of this embodiment sets different tolerances based on at least one of the type of optical characteristic (e.g., spherical power, cylindrical power, astigmatism axis angle, etc.) in the subjective measurement of the subject's eye and the magnitude of the value of the first measurement result of the optical characteristic in the subjective measurement of the subject's eye. For example, since the deviation between the first measurement result and the second measurement result is greatly affected by the type of optical characteristic, by setting tolerances according to the type of optical characteristic, it is possible to smoothly complete the adjustment of the trial lens while maintaining a certain level of accuracy. Furthermore, for example, since the deviation between the first measurement result and the second measurement result has a greater impact on the provisional frame test as the measurement value increases, by setting tolerances according to the measurement value, it is possible to smoothly complete the adjustment of the trial lens while maintaining a certain level of accuracy.

[0090] Furthermore, for example, the optometry system of this embodiment acquires the second measurement result of the trial lens in real time, compares the first measurement result of the subjective measurement of the subject's eye with the second measurement result, which changes from time to time, in real time, and generates and outputs notification information in real time based on the deviation between these measurement results. This allows the examiner to constantly grasp the degree of deviation between the first and second measurement results, while simultaneously checking the second measurement result and adjusting the trial lens. Therefore, the hassle of performing measurements every time the trial lens is changed is reduced, and the trial lens adjustment can be completed efficiently.

[0091] Furthermore, for example, the optometry system of this embodiment outputs notification information regarding the discrepancy between the astigmatic axis angle in the first subjective measurement of the subject's eye and the astigmatic axis angle in the second measurement of the optical characteristics of the trial lens. For example, the spherical and cylindrical powers in the first measurement of the subject's eye vary in 0.25D increments, but the spherical and cylindrical lenses in the trial frame are prepared in 0.25D increments, making the discrepancy easy to notice. On the other hand, for example, the astigmatic axis angle in the first measurement of the subject's eye is in 1-degree increments, but the trial frame's scale is marked in 5-degree increments, making the discrepancy difficult to notice. Therefore, the examiner can easily detect the discrepancy in the astigmatic axis angle that occurs during the provisional frame test of the subject's eye by checking this notification information. Furthermore, if notification information regarding the discrepancy in the astigmatic axis angle between the first and second measurement results is configured to be output in real time, fine adjustments to the discrepancy in the astigmatic axis angle are made easier.

[0092] <Example of transformation> In this embodiment, the measurement optical system 320 of the eyeglass lens measurement device 30 is described as having a so-called lens checker configuration that projects a measurement light beam as a parallel light beam onto a wide area of the trial lens and receives the measurement light beam that has passed through the trial lens to measure the optical characteristics of the trial lens, but is not limited to this. For example, the measurement optical system 320 of the eyeglass lens measurement device 30 may be configured as a so-called lens meter that measures the optical characteristics of the trial lens by placing the trial lens on a nosepiece and receiving the measurement light beam that has passed through the trial lens and the nosepiece diameter.

[0093] In this embodiment, the display screen 360 of the eyeglass lens measuring device 30 displays, as the captured image 366 of the trial frame and trial lens, a single captured image taken during measurement of the optical characteristics of the trial lens, or real-time captured images taken as needed during measurement of the optical characteristics of the trial lens. However, this is not limiting. For example, the display screen 360 of the eyeglass lens measuring device 30 may display an image that allows the examiner to visually recognize the trial frame, and does not necessarily have to be the captured image 366. As an example, the image may be an extracted image obtained by extracting only the trial frame image from either a first measurement image including images of the trial frame and trial lens and the first index pattern 350a, or a second measurement image including images of the trial frame and trial lens and the second index pattern 350b. As another example, the image may be an illustration or other image that resembles the trial frame.

[0094] In this embodiment, the spectacle lens measurement device 30 acquires a reference image and a measurement image of the trial frame (and the trial lens), calculates the optical characteristics of the trial lens using these images, and outputs notification information (e.g., message 371) based on a comparison process between the prescription value 362 of the eye to be examined and the optical characteristics 364 of the trial lens. However, the present invention is not limited to this. For example, after the spectacle lens measurement device 30 acquires a reference image and a measurement image of the trial frame (and the trial lens), these images may be transferred to the subjective optometry device 10 via the shared folder 6, and the subjective optometry device 10 may calculate the optical characteristics of the trial lens, compare the prescription value 362 with the optical characteristics 364, and output notification information. [Explanation of symbols]

[0095] 10. Subjective optometry device 20 Objective optometry device 30 Eyeglass lens measuring device 112 Eye Refractive Power Measurement Unit 320 Measurement optical system

Claims

1. An optometry system for examining an eye to be examined, a first acquisition means for acquiring a first measurement result of optical characteristics of the subject's eye in subjective measurement; a second acquisition means for acquiring a second measurement result of optical characteristics of a trial lens placed in a trial frame worn by the subject's eye; a comparison means for comparing the first measurement result acquired by the first acquisition means with the second measurement result acquired by the second acquisition means; an output means for outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison means; An optometric system comprising:

2. The optometry system of claim 1, the comparison means compares the first measurement result with the second measurement result, and obtains, as the comparison result, a detection result indicating whether the second measurement result falls within an allowable range set based on the first measurement result; The output means outputs the notification information based on the detection result.

3. The optometry system of claim 2, An optometry system, wherein the tolerance range varies based on at least one of the type of the optical characteristic of the subject's eye and the magnitude of the measurement value in the first measurement result.

4. In the optometry system according to any one of claims 1 to 3, the second acquisition means acquires the second measurement result in real time; the comparing means compares the first measurement result with the second measurement result, which changes from time to time, in real time; The output means generates and outputs the notification information in real time based on the deviation between the first measurement result and the second measurement result, which changes each time.

5. In the optometry system according to claims 1 to 4, An optometry system, characterized in that the output means outputs the notification information regarding a deviation between the astigmatic axis angle in the first measurement result and the astigmatic axis angle in the second measurement result.

6. In the optometry system according to any one of claims 1 to 5, a subjective optometry device that subjectively measures optical characteristics of the subject's eye; a spectacle lens measuring device for measuring the optical characteristics of the trial lens; and The subjective ophthalmological examination device is a subjective measuring means for emitting a visual target light beam toward the subject's eye and changing the optical characteristics of the visual target light beam by a corrective means, thereby measuring the optical characteristics of the subject's eye; The eyeglass lens measuring device includes: An optometry system comprising an optical characteristic measuring means for measuring the optical characteristics of the trial lens by projecting a measurement light beam onto the trial lens and receiving the measurement light beam that has passed through the trial lens.

7. An optometry program for use in an optometry system for examining an eye to be examined, When the optometry program is executed by a processor, a first acquisition step of acquiring a first measurement result of optical characteristics of the subject's eye in subjective measurement; a second acquisition step of acquiring a second measurement result of optical characteristics of a trial lens placed in a trial frame worn by the subject's eye; a comparison step of comparing the first measurement result acquired in the first acquisition step with the second measurement result acquired in the second acquisition step; an output step of outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison step; An optometry program causing the optometry system to execute the above.

8. An optometry method performed in an optometry system for examining an eye to be examined, comprising: a first acquisition step of acquiring a first measurement result of optical characteristics of the subject's eye in subjective measurement; a second acquisition step of acquiring a second measurement result of optical characteristics of a trial lens placed in a trial frame worn by the subject's eye; a comparison step of comparing the first measurement result acquired in the first acquisition step with the second measurement result acquired in the second acquisition step; an output step of outputting notification information regarding a deviation between the first measurement result and the second measurement result based on the comparison result of the comparison step; An optometric method comprising:

Images