Subjective optometry apparatus and subjective optometry method

Abstract

To provide a subjective optometer capable of easily performing initial setting in subjective examination, and to provide a subjective optometry program.SOLUTION: In a case where an objective value objectively measuring optical characteristics of an examinee's eye and a spectacle value indicating optical characteristics of a spectacle lens worn by the examinee are stored in a database, the control unit causes the display unit to display a candidate data display screen simultaneously displaying a candidate of the objective value and a candidate of the spectacle value that can be selected by an operator. A data selection step for receiving an instruction by an operator for selecting at least one of the data, and an initial value setting step for setting the initial value of the correction optical system when subjectively measuring the optical characteristic of the eye to be examined based on the data selected by the operator in the data selection step.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a subjective optometry device that subjectively measures optical characteristics of a subject's eye, and a subjective optometry program executed in the subjective optometry device. [Background technology]

[0002] BACKGROUND ART There is known a subjective optometry device that measures optical characteristics of a subject's eye by placing an optical element in front of the subject's eye and presenting a test target to the subject's eye via the optical element (see Patent Document 1).

[0003] Furthermore, when starting an examination using such a subjective ophthalmological examination device, the efficiency of the examination may be improved by setting the initial values ​​of the corrective optical system of the subjective ophthalmological examination device using at least one of objective data obtained by objectively measuring the optical characteristics of the subject's eye and spectacle data obtained by measuring the glasses worn by the subject. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-18712 Summary of the Invention [Problem to be solved by the invention]

[0005] The operator must select the appropriate subject's data from multiple candidate data sets, including objective data and spectacle data, and set the selected data as the initial values ​​for the corrective optical system in the subjective optometry device. Specifically, when performing an examination on the same subject, the operator may set only one of the objective data and spectacle data as the initial values, or may set both the objective data and spectacle data as the initial values. With conventional subjective optometry devices, the operator must spend time and effort selecting the appropriate data from multiple candidate data sets. Furthermore, it is prone to errors, such as selecting the wrong subject's measurement values.

[0006] In view of the above-described conventional techniques, the present disclosure has as its technical object to provide a subjective optometry device and a subjective optometry program that can easily perform initial settings in a subjective examination. [Means for solving the problem]

[0007] In order to solve the above problems, the present disclosure is characterized by having the following configuration.

[0008] (1) A subjective ophthalmological examination device according to a first aspect of the present disclosure is a subjective ophthalmological examination device that subjectively measures the optical characteristics of a test eye, and includes a corrective optical system that changes the optical characteristics of a target light beam presented to the test eye, and a control unit. When objective values ​​obtained by objectively measuring the optical characteristics of the test eye and spectacle values ​​that indicate the optical characteristics of the spectacle lenses worn by the test subject are stored in a database, the control unit executes the following steps: a candidate data display step for displaying on the display unit a candidate data display screen that simultaneously shows candidates for the objective value and the spectacle value that can be selected by an operator; a data selection step for accepting an instruction from the operator to select at least one of the candidates for the objective value and the candidates for the spectacle value shown on the candidate data display screen; and an initial value setting step for setting an initial value of the corrective optical system when subjectively measuring the optical characteristics of the test eye, based on the data selected by the operator in the data selection step. (2) A subjective optometry program according to a second aspect of the present disclosure is a subjective optometry program executed in a subjective optometry device that subjectively measures optical characteristics of a subject's eye, the subjective optometry device having a corrective optical system that changes optical characteristics of a target light beam presented to the subject's eye, and a control unit, and when objective values ​​that objectively measure the optical characteristics of the subject's eye and spectacle values ​​that indicate the optical characteristics of spectacle lenses worn by the subject are stored in a database, the subjective optometry program is executed by the control unit of the subjective optometry device, allowing an operator to select the a candidate data display step of displaying on a display unit a candidate data display screen simultaneously showing candidates for objective values ​​and candidates for spectacle values; a data selection step of receiving an instruction from an operator to select at least one of the candidates for objective values ​​and the candidates for spectacle values ​​shown on the candidate data display screen; and an initial value setting step of setting an initial value of the corrective optical system when subjectively measuring the optical characteristics of the subject's eye, based on the data selected by the operator in the data selection step. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an external view of a subjective optometry device. [Figure 2] FIG. 1 is a schematic diagram of an optometry unit. [Figure 3] FIG. 2 is a schematic diagram of a control system. [Figure 4] 10 is an example of an examination screen on the operation screen of the examiner controller. [Figure 5] 10 is an example of a candidate data display screen on the operation screen of the examiner's controller. [Figure 6] FIG. 10 is a flowchart showing the flow of an examination process in the subjective optometry device. [Figure 7] FIG. 10 is a flowchart showing the flow of operations for setting initial values ​​in the subjective optometry device. [Figure 8] 10 is an example of a subjective value candidate data display screen on the operation screen of the examiner controller. DETAILED DESCRIPTION OF THE INVENTION

[0010] <Summary> An overview of the subjective optometry device according to this embodiment will be described. The items grouped in < > below can be used independently or in conjunction with each other.

[0011] <First aspect> The subjective ophthalmology device of the present disclosure is a device for subjectively measuring optical characteristics of a 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, and the like.

[0012] The subjective ophthalmology device of the present disclosure may include a corrective optical system. For example, the corrective optical system may be configured to change the optical characteristics of the visual target light beam presented to the eye (for example, at least one of spherical power, cylindrical power (astigmatic power), astigmatic axis angle, polarization characteristics, and amount of aberration). For example, the optical characteristics of the visual target light beam may be changed by controlling an optical element. For example, the optical element may be configured to use at least one of a spherical lens, a cylindrical lens, a cross cylinder lens, a rotary prism, a wavefront modulation element, and the like. Of course, for example, the optical element may be an optical element different from the optical elements described above.

[0013] For example, the corrective optical system may be an optometry unit (e.g., optometry unit 40) that switches between optical elements to be placed in front of the subject's eye. For example, the optometry unit may be configured to include a pair of left and right lens chamber units that switch between optical elements (e.g., optical element 52) ​​in an examination window (e.g., examination window 43). For example, the optometry unit may have a lens disk (e.g., lens disk 50) on which multiple optical elements are arranged on the same circumference, and a driving means for rotating the lens disk, and the optical elements may be electrically switched by driving the driving means (e.g., driving units 51 and 53, etc.).

[0014] The subjective optometry device of the present disclosure may include a control unit (e.g., examiner controller 30). The control unit includes a CPU (e.g., control unit 60) that is a control unit that controls the subjective optometry device. For example, an operation instruction from an operator who is a user (e.g., an examiner or an assistant) may be input to the control unit. As an example, the control unit may include at least one user interface such as a monitor, a switch, a touch panel, a mouse, a keyboard, etc.

[0015] The control unit of the subjective optometry device disclosed herein may execute a candidate data display step and a data selection step. In the candidate data display step, the control unit causes the display unit to display a candidate data display screen simultaneously showing candidate objective values ​​and candidate spectacle values ​​selectable by the operator. In the data selection step, the control unit accepts an instruction from the operator to select at least one of the candidate objective values ​​and candidate spectacle values ​​displayed on the candidate data display screen. This allows the operator to, for example, simultaneously check candidate objective values ​​and candidate spectacle values ​​for multiple subjects on the candidate data display screen. Furthermore, the operator can select both the desired objective values ​​and spectacle values ​​together on the same candidate data display screen. As a result, the time and effort required to search for and select data for the relevant subject is reduced.

[0016] The control unit of the subjective optometry device of the present disclosure may execute an initial value setting step in which the control unit sets initial values ​​of the corrective optical system when subjectively measuring the optical characteristics of the subject's eye, based on the data selected by the operator in the data selection step.

[0017] In conventional subjective optometry devices, when setting the initial values ​​of a corrective optical system based on the objective values ​​and spectacle values ​​stored in a database, the operator had to separately select desired data from the objective values ​​and the spectacle values, which made the operation complicated and time-consuming. However, with the technology disclosed herein, the operator can select both the desired objective value and spectacle value, or either the objective value or the spectacle value, from the simultaneously displayed objective values ​​and spectacle values. This allows the selection of the objective value or spectacle value for setting the initial values ​​to be performed more efficiently and in a shorter time, making it easier to perform the initial setting in the subjective examination.

[0018] In the candidate data display step, the control unit may display, on the same screen of the candidate data display screen, an objective value candidate display area for displaying candidate objective values ​​and a spectacle value candidate display area for displaying candidate spectacle values.

[0019] In conventional subjective optometry devices, when selecting objective values ​​and spectacle values ​​from a candidate data display screen, the objective value candidate display area (screen) and spectacle value candidate display area (screen) are separate screens, and the screens are switched back and forth to display the data. When selecting both objective values ​​and spectacle values, the operator must switch between the objective value candidate display screen and the spectacle value candidate display screen each time, which is time-consuming. However, with the technology disclosed herein, the operator can view the desired objective values ​​and spectacle values ​​on the same screen, allowing for more efficient selection of desired data. Furthermore, because the objective value candidate and spectacle value candidate can be visually confirmed on the same screen, it is also possible to confirm whether the selected combination of objective value and spectacle value is appropriate. This reduces operational errors, such as the operator selecting data for the wrong subject, and allows for smoother subjective testing.

[0020] Incidentally, when the objective value candidate display area and the spectacle value candidate display area are arranged on the same screen, the area of ​​each display area becomes smaller than in the conventional screen switching system, which raises concerns about the reduced number of data items that can be displayed at one time. As a countermeasure, for example, scroll bars may be provided in each of the objective value candidate display area and the spectacle value candidate display area. For example, if there are more candidate data items than can be displayed at one time in at least one of the objective value candidate display area and the spectacle value candidate display area, the operator can view all of the data displayed in each display area by scrolling the scroll bar. Furthermore, for example, a mechanism may be implemented to prevent the number of objective value or spectacle value data items displayed in the objective value candidate display area or the spectacle value candidate display area from increasing unnecessarily, such as by automatically deleting objective value or spectacle value data items that have been stored for a predetermined number of days or by deleting objective value or spectacle value data items used to set the initial values.

[0021] In the candidate data display step, when the control unit receives a signal indicating an instruction to display the candidate data display screen input by the operator, the control unit may switch the candidate data display screen to a screen that was displayed before the instruction was input (e.g., a measurement screen for subjectively measuring the optical characteristics of the subject's eye) or may display the candidate data display screen superimposed on the screen that was displayed before the instruction was input. In this case, the area of ​​the candidate data display screen can be more easily secured than in a method in which the candidate data display screen is provided in a part of the screen that was displayed before the instruction was input. Therefore, the control unit can display more candidates for both objective values ​​and spectacle values ​​on the same candidate data display screen.

[0022] In the database, at least some of the multiple data items, which are objective values ​​and spectacle values ​​(i.e., multiple data items including at least one objective value and at least one spectacle value), may be stored in association with an identifier assigned to each subject. In the data selection step, when one of the candidate objective values ​​and candidate spectacle values ​​displayed on the candidate data display screen is selected, the control unit may automatically select the other data item, which shares an identifier with the selected data item, or may display a data search button for searching for the other common data item and then automatically select the other common data item based on an operation signal from the data search button. Alternatively, when a patient ID is entered on the candidate data display screen, the candidate objective values ​​and candidate spectacle values ​​associated with the patient ID may be automatically selected. Furthermore, when a patient ID has been entered in advance, the candidate objective values ​​and candidate spectacle values ​​associated with the patient ID may be automatically selected upon transition to the candidate data display screen. For example, when an objective value is selected by the operator from the candidate data display screen, the control unit may automatically select a spectacle value item having the same identifier as the selected objective value. Also, as an example, the control unit may highlight and display the other data having a related identifier, guiding the operator to easily select the other measurement data having a related identifier (for example, an identifier for the same subject, etc.). Note that the control unit may cancel the state in which the spectacle value has been automatically selected, or may allow the operator to select a spectacle value different from the selected spectacle value, in response to an arbitrary operation by the operator.

[0023] According to the technology disclosed herein, for example, a combination of objective values ​​and spectacle values ​​with the same identifier is automatically selected, thereby reducing the effort and time required for an operator to search for desired data from multiple data lists, and allowing the operator to smoothly select the data they want to obtain.

[0024] In the database, at least some of the multiple data items, namely, objective values ​​and spectacle values, may be stored in association with an identifier assigned to each subject and a data acquisition date. If, in the data selection step, at least one of the identifier and the data acquisition date of the objective values ​​and spectacle values ​​selected by the operator differs from those stored in the database, the control unit may issue an alert to prompt the operator to confirm whether to acquire the selected data. For example, the alert may be configured to alert the operator. For example, the alert may be issued by displaying a message on the data display screen prompting the operator to confirm the data. For example, the alert may be configured to highlight the data display screen. For example, the alert may be at least one of inverting or changing the screen color, flashing the screen, changing the display size, etc. For example, the alert may be configured to display a sign (for example, at least one of a window, a mark, an icon, letters, numbers, symbols, etc.) on the data display screen. Of course, the alert may be configured to highlight such a sign. For example, the control unit may control a sound generation unit (for example, a speaker) to generate the alert as sound. Furthermore, for example, the control unit may control a notification means (for example, a lamp) to indicate an alert by lighting or blinking the notification means. Furthermore, for example, the control unit may control a printing means (for example, a printer) to cause the printing means to print an alert. Furthermore, for example, the control unit may control an external storage means (for example, a memory or a server) to send an alert to the external storage means. Of course, for example, the control unit may execute a control that combines these, or may execute a control different from these. Furthermore, the timing for issuing an alert may be when objective values ​​and spectacle values ​​with different identifiers or dates are selected, or when initial value setting is executed after objective values ​​and spectacle values ​​with different identifiers or dates are selected (for example, when the initial value setting button 231 is selected).

[0025] According to the technology of the present disclosure, if the combination of objective values ​​and spectacle values ​​selected for setting the initial values ​​of the corrective optical system is likely to be inappropriate based on information associated with each data (identifiers and data acquisition dates), the control unit issues an alert to prompt the operator to confirm whether the selected combination of objective values ​​and spectacle values ​​is correct. For example, if the identifiers of the objective values ​​and spectacle values ​​selected by the operator are different, there is a possibility that objective values ​​and spectacle values ​​for different subjects have been selected. Therefore, the control unit issues an alert to prompt the operator to confirm whether to acquire the selected objective values ​​and spectacle values. This allows the operator to reduce operational errors, such as by reducing the frequency with which incorrect objective values ​​or spectacle values ​​are acquired.

[0026] This makes it possible to set initial values ​​with higher accuracy even when measurements are taken again on the same subject or when measurement results are accidentally deleted.

[0027] 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 device or system via a network or various storage media, and a control device (e.g., a CPU) of the device or system may read and execute the program.

[0028] <Second mode> When conducting an eye examination using a subjective optometry device, multiple steps are required before the test results are obtained. For example, the process typically begins with a preliminary step of inputting the subject's objective measurement data (objective values) and pre-spectacles data (spectacles values), followed by a preliminary step of measuring the subject's uncorrected visual acuity, a subjective test to determine the full correction value, a final prescription value adjustment based on the full correction value, taking into account the subject's desired vision and the environment in which the eyeglasses or other vision correction devices are used, and finally, a final step of outputting the test results. With conventional subjective optometry devices, each time the user moves to one of the above steps, the operator must navigate back and forth between the switch buttons on the operation terminal and the buttons on the operation screen to find and operate the corresponding operation button. The operator must move their eyes and fingers to find and select the desired operation button on the operation terminal and the operation screen, which is time-consuming and laborious. However, with the technology disclosed herein, the operator can search for and select a desired operation button from among multiple operation buttons arranged in the order of the examination steps in the examination step order operation area on the examination screen. This reduces the effort and time required to search for the desired operation button, and also shortens the distance the operator must move to select the operation button. Furthermore, since the operation buttons are arranged in the order of the steps, even an operator who does not fully understand the steps required for the examination can simply select the operation buttons in the order in which they are arranged, thereby reducing the frequency of operation errors. In this way, the operator can proceed more efficiently and smoothly through a series of steps required for the examination using a subjective optometry device with more intuitive operations.

[0029] In addition to the above-mentioned multiple operation buttons (initial value input button, naked eye examination button, subjective examination button, prescription adjustment button, and output button), the examination process sequence operation area on the examination screen may include, for example, a spectacle value button (e.g., spectacle value button 113) for inputting the spectacle values ​​of the eyeglasses worn by the subject as the initial position of the corrective optical system for examination, and an objective value button (e.g., objective value button 114) for inputting the objective value of the subject's eye as the initial position of the corrective optical system for examination. Furthermore, the spectacle value button and objective value button may be selected simply when the operator wants to refer to the spectacle values ​​or objective values ​​of the subject.

[0030] The spectacle value button and objective value button only need to be arranged in the same row as the other multiple operation buttons arranged in the order of steps, and their arrangement order does not necessarily have to be fixed. Some operators may test the subject's visual acuity when wearing their existing eyeglasses as part of a pre-examination, similar to a naked eye examination, so the spectacle value button may be arranged as the next step after the naked eye examination button, for example. Also, for example, the spectacle value button and objective value button may be arranged adjacent to each other to make it easier to refer to the spectacle value and objective value entered into the device in the pre-preparation step. The spectacle value button or objective value button may be arranged anywhere on the examination screen as long as it is in the same row as the other multiple operation buttons.

[0031] With the technology disclosed herein, when an operator performs an additional examination, the operator only needs to search for the button in the same row as the other operation buttons on the examination screen, thereby reducing the operator's effort. In this way, the operator can perform the additional examination more smoothly.

[0032] The control unit may display operation buttons indicating processes for which values ​​have been input and processes for which testing has been completed among the processes corresponding to the various operation buttons (including the initial value input button, the naked eye test button, the subjective test button, the prescription adjustment button, and the output button) in a manner that makes them distinguishable from other operation buttons (for example, operation buttons indicating processes for which values ​​have not been input or processes for which testing has not been performed). Methods for making these buttons distinguishable include, for example, changing the color or the thickness of the border. Furthermore, for example, operation buttons indicating processes for which values ​​have not been input or processes for which testing has not been performed may be grayed out.

[0033] The technology disclosed herein allows the operator to visually check on the inspection screen the processes for which values ​​have already been entered and the processes for which inspection has already been completed, reducing the operator's mistake of skipping a necessary process and enabling inspection to be carried out smoothly at the process intended by the operator.

[0034] On the examination screen, an examination process sequence operation area (e.g., examination process sequence operation area 110) that displays a row of operation buttons in accordance with the order of a plurality of examination processes may be arranged in one of the areas sandwiching a measurement value display area (e.g., measurement value display area 120) that displays the examination results, and an examination optotype selection area (examination optotype selection area 130) may be arranged in the other area. The examination process sequence operation area and the examination optotype selection area may be arranged, for example, in the left and right areas or in the top and bottom areas, sandwiching the measurement value display area. However, either the examination process sequence operation area or the examination optotype selection area may be arranged at the top or left, or either may be arranged at the bottom or right.

[0035] The examination step sequence operation area displays operation buttons for inputting instructions to execute each examination step. On the other hand, the examination target selection area is an area where the operator selects the examination target to be presented to the subject's eye when performing the examination in each step. By displaying the examination target selection area on the examination screen, the operator can switch and present the examination target to be used in the examination in each step without the need to switch from the examination screen.

[0036] In addition, by arranging the inspection process sequence operation area and the inspection optotype selection area apart, it is possible to make it less likely that the operator will press the wrong button between the operation to switch the inspection optotype and the operation to switch the process. Furthermore, by arranging the measurement value display area in the middle, it is possible to make it easier for the operator to see the measurement value display area while operating the inspection screen.

[0037] Therefore, with the technology disclosed herein, the operator can switch between various test steps and the test optotypes presented during the test in each test step on the same screen (test screen), completing the series of operations related to the test using this device on the test screen. Furthermore, by locating the test step sequence operation area and the test optotype selection area separately on both sides of the measurement value display area, it is possible to reduce the chance of accidentally pressing an operation button instead of a button for selecting an optotype. In this way, the operator can more efficiently and smoothly proceed through the series of steps required for testing with a subjective optometry device.

[0038] 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 device or system via a network or various storage media, and a control device (e.g., a CPU) of the device or system may read and execute the program.

[0039] It is also possible to combine the technology of the <first aspect> and the technology of the <second aspect>.

[0040] <Example> An example of a subjective optometry device according to this embodiment will be described. In this example, a subjective optometry device is illustrated that is integrally equipped with a target presenting means for presenting a test target to the subject's eye and an optometry unit for changing the optical characteristics of the target light beam emitted from the target presenting means. Of course, for example, the target presenting means may be provided as a housing separate from the subjective optometry device.

[0041] <Device configuration> 1 is an external view of a subjective optometry device 1. For example, the subjective optometry device 1 includes a housing 10, a presentation window 20, an examiner controller 30, an optometry unit 40, and the like.

[0042] The housing 10 includes a projection optical system (not shown), a visual target display unit 70, and the like. The presentation window 20 transmits the visual target light beam emitted from the visual target display unit 70 and passing through the projection optical system. The visual target light beam is projected onto the subject's eye through the presentation window 20. When an eye examination unit 40 is disposed between the subject's eye and the presentation window 20, the visual target light beam is projected onto the subject's eye through the presentation window 20 and a test window 43 (described later). This presents a test visual target to the subject's eye. The configuration of the projection optical system (not shown) can be, for example, the technology disclosed in Japanese Patent Application Laid-Open No. 2024-51811. Therefore, detailed description thereof will be omitted.

[0043] The examiner's controller 30 is used, for example, by an operator to operate the subjective optometry device 1. The examiner's controller 30 includes a display unit (e.g., a monitor 31), a switch unit 32, and the like. The switch unit 32 inputs signals for performing various settings (e.g., settings of the optometry unit 40, etc.). The monitor 31 displays various information (e.g., measurement results of the subject's eye, etc.). The monitor 31 may also function as a touch panel that doubles as the switch unit 32. Signals from the examiner's controller 30 are output to the control unit 60 (see FIG. 3) via wired or wireless communication.

[0044] The optotype display unit 70 presents a test optotype to the subject's eye. For example, the optotype display unit 70 may be a display, a light source and a DMD (Digital Micromirror Device), a light source and an optotype plate, or the like. In this embodiment, a display may be used as the optotype display unit 70. For example, the display may be an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence) display, or the like. The optotype displayed by the optotype display unit 70 may be at least one of directional optotypes (e.g., Landolt ring optotypes, Tumbling E optotypes, etc.) for enabling the subject to identify directions, character optotypes (e.g., hiragana optotypes, katakana optotypes, alphabet optotypes, etc.) for enabling the subject to read letters, and number optotypes for enabling the subject to identify numbers. Furthermore, for example, the optotype may be at least one of a single optotype (e.g., a single-letter optotype), a group of optotypes (e.g., a horizontal row optotype, a vertical row optotype, a character-filled optotype, etc.) and the like. The optotype light beam from the optotype display unit 70 may be directly guided toward the subject's eye. For example, the optotype light beam from the optotype display unit 70 may be guided toward the subject's eye via a light projection optical system. For example, the light projection optical system may have at least one optical member through which the optotype light beam emitted from the optotype display unit 70 passes. For example, the light projection optical system may have at least one of a lens, a mirror, etc.

[0045] <Ophthalmology unit (corrective optical system)> FIG. 2 is a schematic diagram of the optometry unit 40. The optometry unit 40 subjectively measures the refractive power of the subject's eye. The optometry unit 40 is also used as a corrective optical system. The corrective optical system is disposed in the optical path from the optotype display unit 70 to the subject's eye, and changes the optical characteristics of the optotype light beam projected onto the subject's eye. For example, the optometry unit 40 includes a forehead rest 41, a lens unit 42, an examination window 43, and a moving unit 44.

[0046] The forehead rest 41, against which the subject's head rests, fixes the subject's eye at a predetermined examination position and maintains a constant distance from the subject's eye 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).

[0047] 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 (not shown). 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 (not shown).

[0048] 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 also has an aperture (or a 0D lens) and a plurality of optical elements 52 (left optical element 52L and right optical element 52R) arranged on the same circumference. These optical elements change the optical characteristics of the visual target light beam by controlling a driver (e.g., driver 51 (left driver 51L and right driver 51R) and driver 53 (left driver 53L and right driver 53R)) that controls the lens disk.

[0049] The lens disk 50 may be composed 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, 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.

[0050] The optometry unit 40 may be configured to change the optical characteristics of the target light beam. For example, it may be configured to control an optical element as in this embodiment. Alternatively, it may be configured to control a wavefront modulation element.

[0051] <Control unit> FIG. 3 is a schematic diagram of the control system of the subjective optometry device 1. For example, the control unit 60 includes a CPU (processor), RAM, ROM, etc. The CPU controls the driving of each unit in the subjective optometry device 1. Various types of information are temporarily stored in the RAM. Various programs executed by the CPU (for example, subjective optometry programs for executing the processes of FIGS. 6 and 7, etc.) are stored in the ROM. The control unit 60 may be configured with multiple control units (i.e., multiple processors).

[0052] The control unit 60 is connected to the examiner's controller 30 (including the monitor 31 and the switch unit 32), the optotype display unit 70, the database 80, etc. The control unit 40 is also connected to the drive unit of the optometry unit 40, the drive unit of the lens disc 50 (drive units 51 and 53, etc.), etc. In addition, the control unit 60 may be connected to an external storage device (not shown), a printer (not shown), etc.

[0053] The database 80 may be connected to at least one control unit of a subjective optometry device (e.g., the control unit 60 of the subjective optometry device 1) via wired communication, wireless communication, a network, or the like. Furthermore, the database 80 may be connected to an objective optometry device that objectively measures the optical characteristics of the subject's eye, or a lens characteristic measuring device that measures the optical characteristics of a spectacle lens, or the like, via wired communication, wireless communication, a network, or the like. The database 80 may store a plurality of data, such as objective values ​​obtained by measuring the optical characteristics of the subject's eye with the above-mentioned objective optometry device, or spectacle values ​​obtained by measuring the optical characteristics of the eyeglasses worn by the subject with the above-mentioned lens characteristic measuring device. Alternatively, the test data output from the subjective optometry device 1 may be stored (copied and stored) in the database 80. For example, the data stored in the database 80 may be displayed on a candidate data display screen 200 (see FIG. 5 ) on the monitor 31. Alternatively, a storage unit (not shown) provided in the subjective optometry device 1 may function as the database 80.

[0054] <Test screen> 4 is an example of an examination screen 100 displayed on the monitor 31 of the examiner controller 30. For example, the examination screen 100 includes an examination process sequence operation area 110, a measurement value display area 120, and an examination target selection area 130.

[0055] In the examination process sequence operation area 110, a plurality of operation buttons operated by an operator to input instructions for each of a plurality of examination processes are arranged in accordance with the order of the plurality of examination processes. As an example, in the examination process sequence operation area 110 shown in Fig. 4, an initial value input button 111, a naked eye test button 112, a spectacle value button 113, an objective value button 114, a subjective test button 115, a prescription adjustment button 116, and an output button 117 are arranged in the same row. Note that it is sufficient that at least the initial value input button 111, the naked eye test button 112, the subjective test button 115, the prescription adjustment button 116, and the output button 117 are arranged in accordance with the order of the examination processes in the examination process sequence operation area 110.

[0056] For example, the initial value input button 111 is operated to start a process of inputting initial values ​​of the corrective optical system at the start of the test as a preparation process for starting the test of the subject's eye. The uncorrected eye test button 112 is operated to start measuring the uncorrected eye visual acuity value, which is a pre-test process performed before the diopter of the subject's eye is corrected. The spectacle value button 113 is operated to start the test using data on the optical characteristics of the eyeglasses worn by the subject (spectacle value) as the initial value of the corrective optical system. The objective value button 114 is operated to start the test using data obtained by objectively measuring the optical characteristics of the subject's eye (objective value) as the initial value of the corrective optical system. In addition, the spectacle value button 113 and the objective value button 114 may be used to have the subject subjectively confirm how they see based on the spectacle value or objective value. The subjective test button 115 is operated to start a test to determine a perfect correction value, which is a subjective test process. The prescription adjustment button 116 is operated to start a test to determine a prescription value based on the perfect correction value, which is a process following the subjective test. The output button 117 is operated to start the data output of a series of test results, which is the result output process. By arranging multiple operation buttons in accordance with the order of the test processes, the area that the operator must look at to find the operation button is limited, thereby reducing the effort and time required to search for the desired operation button. In addition, the distance the operator's fingers must move to select an operation button can also be shortened. Furthermore, by arranging the operation buttons in accordance with the order of the test processes, even an operator who does not fully understand the steps required for the test can intuitively select the operation buttons in the order in which they are arranged, thereby reducing the frequency of operation errors.

[0057] The measurement value display area 120 displays the test results of each test step or the initial values ​​of each test step. For example, the measurement value display area 120 may display values ​​related to the optical characteristics of the target light beam for each type of optical characteristic. For example, the measurement value display area 120 may display a spherical prescription value (S), a cylindrical prescription value (C), an astigmatism axis prescription value (A), or a prescribed add power (ADD).

[0058] The test optotype selection area 130 displays a plurality of test optotype candidates that can be presented on the optotype display unit 70 (for example, in this embodiment, icons representing each of a plurality of presentable test optotypes). For example, the icons of the test optotypes may include at least one of the Landolt ring optotype, the tumbling E optotype, the hiragana optotype, the katakana optotype, the alphabet optotype, and the number optotype. In this embodiment, the test optotype selection area 130 displays icons of a plurality of test optotypes that are registered as frequently used test optotypes (high-frequency optotypes). When the operator selects one of the icons of the plurality of test optotypes displayed in the test optotype selection area 130, the test optotype corresponding to the selected icon is displayed on the optotype display unit 70. When the operator further selects the icon of the next test optotype, the test optotype displayed on the optotype display unit 70 is switched to the test optotype corresponding to the selected icon. Note that the test optotype selection area 130 may display all test optotypes that can be presented on the optotype display unit 70. For example, a button for calling up a screen displaying all presentable test optotypes may be placed in the test optotype selection area 130. Alternatively, all presentable test optotypes may be displayed in the test optotype selection area 130 by switching between tabs.

[0059] Furthermore, by arranging the examination process sequence operation area 110, the measurement value display area 120, and the examination optotype selection area 130 on the examination screen 100 displayed on the monitor 31, the operator can select operation buttons arranged in the order of the examination processes and switch the examination optotype required for each examination on the same screen while visually checking the measurement values ​​for each examination. Furthermore, for example, by arranging the examination process sequence operation area 110 and the examination optotype selection area 130 in both areas sandwiching the measurement value display area 120, it is possible to reduce the chance of an operator accidentally pressing an operation button instead of a button for selecting an examination optotype.

[0060] <Candidate data display screen> FIG. 5 shows an example of a candidate data display screen 200 displayed on the monitor 31 of the examiner controller 30. As will be described in detail later, the candidate data display screen 200 of this embodiment is displayed by operating the initial value input button 111 on the examination screen 100 (see FIG. 4). As described above, the initial value input button 111 is operated to start the process of inputting initial values ​​of the corrective optical system at the start of examination as a preparation step for starting examination of the subject's eye. The operator can select an appropriate initial value from the candidates for the initial value of the corrective optical system displayed on the candidate data display screen 200. As an example, the candidate data display screen 200 shown in FIG. 5 includes an objective value candidate display area 210, a spectacle value candidate display area 220, an initial value setting button 231, a return button 232, a subjective value display button 233, and the like.

[0061] The objective value candidate display area 210 displays a plurality of objective value candidates 211 stored in the database 80. The displayed objective value candidates 211 are displayed in association with at least the date and time when the objective value was acquired (data acquisition date and data acquisition time). In addition to the date and time when the data was acquired, the displayed objective value candidates 211 may be associated with information that can identify the data, such as an identifier or data number assigned to each subject. Furthermore, when more objective value data than can be displayed in the objective value candidate display area 210 is stored in the database 80, for example, the control unit 60 may activate a scroll button 212 provided in the objective value candidate display area 210. The operator can check all of the objective value data candidates stored in the database 80 by operating the scroll button 212.

[0062] The spectacle value candidate display area 220 displays a plurality of spectacle value candidates 221 stored in the database 80. The displayed spectacle value candidates 221 are displayed in association with at least the date and time when the spectacle values ​​were acquired (data acquisition date and data acquisition time). The displayed spectacle value candidates 221 may be associated with information that can identify the data, such as an identifier or data number assigned to each subject, in addition to the date and time when the data was acquired. Furthermore, when more spectacle value data than can be displayed in the spectacle value candidate display area 220 is stored in the database 80, for example, the control unit 60 may activate a scroll button 222 provided in the spectacle value candidate display area 220. The operator can check all spectacle value data candidates stored in the database 80 by operating the scroll button 222.

[0063] The initial value setting button 231 is a button for inputting (setting initial values) data of at least one of the selected objective value and spectacle value into the subjective optometry device 1. When the initial value setting button 231 is selected with at least one of the objective value and spectacle value data selected from the objective value candidate display area 210 and the spectacle value candidate display area 220, the control unit 60 stores the selected data of at least one of the objective value and spectacle value as the initial value of the subjective optometry device 1, and simultaneously transitions from the candidate data display screen 200 to the examination screen 100.

[0064] The return button 232 is operated by the operator to cancel the initial value input operation. For example, when the return button 232 is selected, the control unit 60 interrupts the process of setting the initial values ​​in the subjective optometry device 1 and transitions from the candidate data display screen 200 to the examination screen 100.

[0065] The subjective value display button 233 is a button that calls up past test data obtained by the subjective optometry device, which is stored in the database 80. For example, when the subjective value display button 233 is selected, the control unit 60 may call up a screen that displays past test data obtained by the subjective optometry device.

[0066] <Control action> The control operation of the subjective optometry apparatus having the above-described configuration will be described below.

[0067] FIG. 6 is a flowchart showing an example of an examination process when an examination is performed using the subjective optometry device 1 from the viewpoint of control by the control unit 60.

[0068] <Preparation process> When starting an examination of an eye to be examined using the subjective optometry device 1, the operator selects the initial value input button 111 on the examination screen 100 to set at least one of the objective value and the spectacle value as the initial value of the corrective optical system (optometry unit 40) as a preparation step. When the control unit 60 detects a selection signal of the initial value input button 111 (step S1: YES), it processes various initial value setting instructions from the operator while displaying the candidate data display screen 200 on the monitor 31 (step S2). The control unit 60 displays a list of the objective value and the spectacle value stored in the database 80 on the candidate data display screen 200 (see FIG. 5). The various initial value setting instructions from the operator and the processing of the control unit 60 based on the instructions will be described in detail later with reference to FIG. 7. Note that if the operator does not select the initial value input button 111 (step S1: NO), the control unit 60 proceeds to a process of detecting whether the spectacle value button has been selected (step S3).

[0069] FIG. 7 is a flowchart illustrating an example of the initial value setting instruction process (S2, see FIG. 6) after detecting a selection signal of the initial value input button 111, from the viewpoint of control by the control unit 60. When the control unit 60 detects the selection signal of the initial value input button 111, it causes the monitor 31 to display a candidate data display screen 200 (step F1). The candidate data display screen 200 may be displayed on the monitor 31, switching from the examination screen 100. The candidate data display screen 200 may be displayed on the monitor 31 by superimposing it on the examination screen 100. According to the technology disclosed herein, the area of ​​the candidate data display screen 200 can be more easily secured than in a method in which the candidate data display screen 200 is provided in a portion of the examination screen 100. Therefore, the control unit 60 can display a larger number of both objective value candidates and spectacle value candidates on the same candidate data display screen 200.

[0070] As an example of the initial value setting operation, a case will be described in which, for example, there exists a value having the same identifier as either the objective value or the spectacle value selected by the operator. When the candidate data display screen 200 is displayed, for example, in the initial display state, the objective value at the latest date and time in the objective value candidate display area 210 and the spectacle value at the latest date and time in the spectacle value candidate display area 220 are each selected. First, the operator searches the candidate data display screen 200 for, for example, an objective value for a desired subject's identifier (e.g., the objective value candidate 211 in FIG. 5 , F01234567 in the figure). For example, if the number of objective value data stored in the database 80 exceeds the number that can be displayed in the objective value candidate display area 201, the control unit 60 may activate the scroll button 212. For example, the operator may operate the scroll button 212 to select the objective value for the desired subject's identifier F01234567 from the objective value candidate display area 210. When the control unit 60 detects that one value (objective value) has been selected (step F2: YES), it searches for the other value (spectacles value) having the same identifier as the selected value (step F3). When the control unit 60 detects a spectacle value having the same identifier as the identifier F01234567 (step F3: YES), it automatically selects the spectacle value as a candidate (step F4). If the automatically selected spectacle value is not to be set as the initial value, the operator may cancel the selection by, for example, reselecting the selected spectacle value. If the operator sets the automatically selected spectacle value as the initial value, the operator selects the initial value setting button 231 (step F8: YES) without manually selecting either the objective value or the spectacle value (step F5: NO). As a result, the control unit 60 sets the currently selected objective value and spectacle value as the initial values ​​in the subjective optometry device 1 (step F9), and transitions from the candidate data display screen 200 to the examination screen 100 (step F11). When either the objective value or the spectacle value is selected, the other value having the same identifier is automatically selected, thereby reducing the effort and time required for the operator to search for the desired data from multiple data lists and allowing the operator to smoothly select the data they want to obtain.

[0071] In addition, in the flow of step F3, if there is no other value (spectacles value) with the same identifier (step F3: NO), the control of the control unit 60 proceeds to a flow (step F5) that detects whether the spectacle value is manually selected by the operator (whether both the objective value and the spectacle value are selected).

[0072] Alternatively, as another example of an initial value setting operation, a case where the operator manually selects the objective value and spectacle value will be described. For example, the operator selects the objective value with identifier M00123456 in FIG. 5 from the objective value candidate display area 210. Next, the operator selects the spectacle value with identifier M00987654 from the spectacle value candidate display area 220. At this time, the control unit 60 detects a signal that both the objective value and the spectacle value have been manually selected (step F5: YES) and compares whether there are any differences in the identifiers or dates of the two selected values ​​(step F6). If the control unit 60 detects that the identifiers of the two selected values ​​are different (step F6: YES), for example, it displays an alert box on the monitor 31 prompting the operator to confirm whether or not to set the objective value and spectacle value with different identifiers as initial values. In this way, when the identifiers or data acquisition dates of the objective value and spectacle value selected by the operator are different, an alert is issued to prompt the operator to confirm whether to set the selected objective value and spectacle value as the initial value, thereby reducing the frequency with which the operator acquires an incorrect objective value or spectacle value, thereby reducing operational errors. For example, the operator may change the selected value by their own operation based on the alert (e.g., change the selected objective value to identifier M00987654). Furthermore, upon detecting a selection signal from the operator's initial value setting button 231 (step F8: YES), the control unit 60 sets the objective value and spectacle value selected at that time as the initial values ​​in the subjective optometry device 1 (step F9), and transitions from the candidate data display screen 200 to the examination screen 100 (step F11).

[0073] As another example of the initial value setting operation, when the operator intends to set only the objective values ​​of a desired subject as initial values, the control flow of the control unit 60 shown in Fig. 7 proceeds, for example, in the order of step F1, step F2: YES, step F3: NO, step F5: NO, step F8: YES, step F9, and step F11. Also, when the operator selects the return button 212 on the candidate data display screen 200, the control flow of the control unit 60 shown in Fig. 7 proceeds, for example, in the order of step F1, step F2: NO, step F5: NO, step F8: NO, step F10: YES, and step F11.

[0074] When the initial value setting operation is completed, or when the initial value setting operation is canceled, the control flow of the control unit 60 returns to step F3 of the inspection process shown in FIG.

[0075] <Pre-inspection process> After completing the initial value setting, the operator selects the naked eye test button 112 on the test screen 100 to measure the naked eye visual acuity value of the subject's eye before diopter correction (naked eye test), for example, as a preliminary test step. When the control unit 60 detects the selection signal of the naked eye test button 112 (step S3: YES), it controls the lens disk 50 and the optical element 52 included in the lens disk 50, for example, so that an aperture or 0D optical element 52 is positioned in the test window 43. Alternatively, the control unit 60 may move the optometry unit 40 from the measurement position to a standby position (a position where the optometry unit 40 is moved from in front of the subject's eye so that the space between the subject's eye and the presentation window 2 is open). After positioning the optometry unit 40 for the naked eye test as described above (step S4), the operator begins the naked eye test of the subject's eye. For example, the operator selects an icon of a Landolt ring test target having a predetermined visual acuity value from among the test targets displayed in the test target selection area 130. Based on the operation signal, the control unit 60 causes the optotype display unit 70 to display the specified Landolt ring target. The operator operates the examiner controller 30 to switch between Landolt ring targets and ask the subject which direction the gap in the ring of the Landolt ring target faces. For example, if the subject's answer is correct, the operator changes the visual acuity value of the Landolt ring target to a visual acuity value one level higher. That is, the operator increases the visual acuity value of the Landolt ring target by one increment, changing it to a value larger than the current value. For example, if the subject's answer is incorrect, the operator changes the visual acuity value of the Landolt ring target to a visual acuity value one level lower. That is, the operator decreases the visual acuity value of the Landolt ring target by one increment, changing it to a value smaller than the current value. The operator repeats these procedures to determine the highest visual acuity value of the Landolt ring target that the subject's eye can read, and then ends the naked eye test.

[0076] For example, as a preliminary examination step, the operator may select the spectacle value button 113 on the examination screen 100 to measure the visual acuity value of the subject's eye at the spectacle value of the eyeglasses worn by the subject. When the control unit 60 detects a selection signal from the spectacle value button 113 (step S5: YES), the control unit 60 controls the lens disk 50 and the optical element 52 of the lens disk 50 based on, for example, the initial correction amount indicated by the spectacle value initially set in the preliminary preparation step (step S6). When the optical characteristics of the target light beam emitted to the subject's eye are corrected by the initial correction amount based on the spectacle value, the operator starts measuring the visual acuity value of the subject's eye. For example, the operator designates an icon of a Landolt ring target having a predetermined visual acuity value from among the test targets displayed in the test target selection area 130. The control unit 60 displays the designated Landolt ring target on the target display unit 70 based on the operation signal. The operator operates the examiner controller 30 to switch between Landolt ring targets and ask the examinee which direction the gap in the ring of the Landolt ring target faces. For example, if the examinee's answer is correct, the operator switches the visual acuity value of the Landolt ring target to a visual acuity value one level higher. That is, the operator increases the visual acuity value of the Landolt ring target by one increment, switching it to a value larger than the current value. For example, if the examinee's answer is incorrect, the operator switches the visual acuity value of the Landolt ring target to a visual acuity value one level lower. That is, the operator decreases the visual acuity value of the Landolt ring target by one increment, switching it to a value smaller than the current value. The operator repeats these procedures to determine the highest visual acuity value of the Landolt ring target that the examinee's eye can read, and then ends the visual acuity measurement of the examinee's eye based on the spectacle value.

[0077] For example, as a preliminary examination step, the operator may select the objective value button 114 on the examination screen 100 to measure the visual acuity value of the subject's eye at an objective value obtained by objectively measuring the optical characteristics of the subject's eye. Upon detecting a selection signal from the objective value button 114 (step S7: YES), the control unit 60 controls the lens disk 50 and the optical element 52 of the lens disk 50 based on the initial correction amount indicated by the objective value initially set in the preliminary preparation step (step S8). Once the optical characteristics of the target light beam emitted to the subject's eye are corrected by the initial correction amount based on the objective value, the operator begins measuring the visual acuity value of the subject's eye. For example, the operator selects an icon of a Landolt ring target having a predetermined visual acuity value from among the test targets displayed in the test target selection area 130. Based on the operation signal, the control unit 60 controls the target display unit 70 to display the selected Landolt ring target. The operator operates the examiner controller 30 to switch between Landolt ring targets and ask the examinee which direction the gap in the ring of the Landolt ring target faces. For example, if the examinee's answer is correct, the operator switches the visual acuity value of the Landolt ring target to a visual acuity value one level higher. That is, the operator increases the visual acuity value of the Landolt ring target by one increment, changing it to a value larger than the current value. For example, if the examinee's answer is incorrect, the operator switches the visual acuity value of the Landolt ring target to a visual acuity value one level lower. That is, the operator decreases the visual acuity value of the Landolt ring target by one increment, changing it to a value smaller than the current value. The operator repeats these procedures to determine the highest visual acuity value of the Landolt ring target that the examinee's eye can read, and then ends the objective-based visual acuity measurement of the examinee's eye.

[0078] <Subjective inspection process> When the preliminary examination is completed, the operator selects the subjective examination button 115 on the examination screen 100 to perform an examination to determine the perfect correction value of the subject's eye, for example, as a subjective examination step. When the control unit 60 detects the selection signal of the subjective examination button 115 (step S9: YES), it controls the lens disk 50 and the optical element 52 of the lens disk 50 based on the initial correction amount indicated by the objective value set as the initial value in the preliminary preparation step (step S10). Note that the initial value for the subjective examination may be set in advance so that the objective value is the initial correction amount. If the initial value set in the preliminary preparation step is only the spectacle value, the spectacle value may be set as the initial correction amount instead of the objective value. Alternatively, the setting may be changed so that the spectacle value is given priority as the initial value for the subjective examination.

[0079] Once the optical characteristics of the target light beam emitted to the subject's eye are corrected by an initial correction amount based on the initial value of the subjective test (e.g., the objective value), the operator begins a subjective test to determine the full correction value of the subject's eye. For example, the operator selects an icon of a Landolt ring target having a predetermined visual acuity value from among the test targets displayed in the test target selection area 130. Based on an operation signal, the control unit 60 displays the selected Landolt ring target on the target display unit 70. The operator operates the examiner's controller 30 to switch between Landolt ring targets and ask the subject which direction the gap in the ring of the Landolt ring target faces. For example, if the subject's answer is correct, the operator changes the visual acuity value of the Landolt ring target to a visual acuity value one level higher. In other words, the operator increases the visual acuity value of the Landolt ring target by one increment, changing it to a value greater than the current value. For example, if the subject's answer is incorrect, the operator changes the visual acuity value of the Landolt ring test to a visual acuity value one level lower. In other words, the operator decreases the visual acuity value of the Landolt ring test by one step and changes it to a value smaller than the current value. The operator repeats these steps to find the highest visual acuity value of the Landolt ring test that the subject's eye can read.

[0080] Next, the operator operates the examiner controller 30 to change the correction amount of the optical characteristics of the target light beam emitted to the test eye, while asking the test subject about the direction of the gap in the ring of the Landolt ring. For example, if the test subject answers correctly, the operator changes the spherical correction amount to a correction amount that is one level weaker. That is, the operator decreases the spherical correction amount by one step and changes it to a value smaller than the current value. For example, if the test subject answers incorrectly, the operator changes the spherical correction amount to a correction amount that is one level stronger. That is, the operator increases the spherical correction amount by one step and changes it to a value larger than the current value. The operator repeats these procedures to determine the best visual acuity value of the Landolt ring that the test eye can read. Furthermore, the operator switches to multiple other test targets and repeats the procedure of adjusting the correction amount in the same way to determine the perfect correction value of the test eye for the spherical correction amount, cylindrical correction amount, astigmatism axis correction amount, etc.

[0081] <Post-subjective inspection process> After the perfect correction value of the subject's eye is determined in the subjective test, the operator selects the prescription adjustment button 116 on the test screen 100 to perform a test to determine a prescription value based on the perfect correction value, for example, as a post-process of the subjective test. When the control unit 60 detects the selection signal of the prescription adjustment button 116 (step S11: YES), it controls the lens disk 50 and the optical element 52 of the lens disk 50, for example, based on the initial correction amount indicated by the perfect correction value of the subject's eye determined in the subjective test process (step S12). Once the optical characteristics of the target light beam emitted to the subject's eye are corrected by the initial correction amount based on the perfect correction value, the operator performs a test to adjust the prescription value while checking the subject's vision using experience and a predetermined method, and determines the final prescription value.

[0082] <Result output process> After determining the prescription values, the operator selects the output button 117 on the examination screen 100 to output the test result data obtained by the test using the subjective optometry device 1, for example, as a result output step. When the control unit 60 detects the selection signal of the output button 117 (step S13: YES), it outputs, for example, the test result data obtained by the test using the subjective optometry device 1 to an external storage device connected to the control unit 60. The method for outputting the test result data is not limited to this. For example, the control unit 60 may output the test result data to a printer connected to the control unit 60 and print the test result data. For example, the control unit 60 may output the test result data to the database 80. Furthermore, these test data output methods may be used in combination.

[0083] When the test result data obtained by the subjective optometry device 1 is output, all the test steps are completed.

[0084] For example, the control unit 60 may display operation buttons indicating processes for which values ​​have been input and processes for which testing has been completed among the various operation buttons (see FIG. 4) on the operation screen 100 in a manner that makes them distinguishable from other operation buttons (e.g., operation buttons indicating processes for which values ​​have not been input or processes for which testing has not been performed). For example, when the control unit 60 determines the visual acuity value of the subject's naked eye through a naked eye test, it may change the color of the naked eye test button 112 from white to blue. The operation buttons indicating processes for which values ​​have been input and processes for which testing has been completed may be displayed in different colors or with different frame thicknesses. Any distinguishable display method is possible. This allows the operator to easily identify processes that have already been completed, reducing the risk of forgetting to perform a required testing process.

[0085] <Example of transformation> In this embodiment, the case where the objective value or the spectacle value is used as the initial value in the subjective test has been described as an example, but the present invention is not limited to this. In some cases, a subject who has already completed a subjective test may be subjected to a subjective test again, and in such cases, there may be a demand to use the results of a previous test using a subjective test device (for example, a fully corrected value) as the initial value for the subjective test.

[0086] For example, the database 80 can store a plurality of test results (hereinafter referred to as subjective values) obtained by the subjective optometry device. The control unit 60 may display the subjective values ​​stored in the database 80 as selection candidates on the monitor 31, and when at least one of the plurality of subjective values ​​displayed as selection candidates is selected by the operator, set the selected subjective value in the subjective optometry device 1 as an initial value for the subjective test.

[0087] FIG. 8 shows an example of a subjective value candidate data display screen 300 displayed on the monitor 31 of the examiner controller 30. For example, the subjective value candidate data display screen 300 includes a subjective value candidate display area 310, a set initial value button 321, an objective value / spectacles value candidate display button 322, and a return button 323. The subjective value candidate display area 310 displays a plurality of subjective value candidates 311 stored in the database 80. For example, the subjective value displayed in the subjective value candidate display area 310 may be associated with information that can identify the data, such as an identifier or data number assigned to each subject, in addition to the date and time when the data was acquired. For example, the set initial value button 321 may be a button that sets the selected subjective value data to an initial value in the subjective optometry device 1. Furthermore, for example, the set initial value button 321 may also function as a button that sets the selected subjective value to an initial value and transitions from the subjective value candidate data display screen 300 to the examination screen 100. For example, the objective value / spectacles value candidate display button 322 may be a button for switching the display from the subjective value candidate data display screen 300 to the candidate data display screen 200. For example, the return button 323 may also serve as a button for interrupting the process of setting the initial value and for transitioning from the subjective value candidate data display screen 300 to the examination screen 100.

[0088] For example, the operator selects the subjective value display button 233 on the candidate data display screen 200 (see FIG. 5 ). For example, when the control unit 60 detects a selection signal of the subjective value display button 233, it causes the monitor 31 to display the subjective value candidate data display screen 300. The operator selects a desired subjective value candidate 311 from the subjective value candidate display area 310, and then selects the initial value setting button 321. Based on the selection signal, the control unit 60 sets the data of the selected subjective value candidate 311 as an initial value in the subjective optometry device 1, and transitions from the subjective value candidate data display screen 300 to the examination screen 100.

[0089] As described above, by being able to set the subject's past subjective values ​​as the initial values ​​for the subjective test, it is possible to set a more accurate initial value even when measuring the same subject again or when the measurement results are accidentally deleted. [Explanation of symbols]

[0090] 1. Subjective eye examination device 10. Cabinet 20 Presentation window 30 Examiner's Controller 40 Optometry Unit 60 Control Unit 70 Visual target display section 80 databases 100 Inspection Screen 200 Candidate data display screen

Claims

1. A subjective optometry device for subjectively measuring optical characteristics of a subject's eye, a corrective optical system that changes the optical characteristics of a target light beam presented to the subject's eye; A control unit; and When the objective values ​​obtained by objectively measuring the optical characteristics of the subject's eye and the spectacle values ​​indicating the optical characteristics of the spectacle lenses worn by the subject are stored in a database, The control unit a candidate data display step of displaying on a display unit a candidate data display screen simultaneously showing the candidate objective values ​​and the candidate spectacle values ​​selectable by an operator; a data selection step of receiving an instruction from an operator to select at least one of the objective value candidates and the spectacle value candidates displayed on the candidate data display screen; an initial value setting step of setting initial values ​​of the correction optical system when subjectively measuring the optical characteristics of the subject's eye, based on the data selected by the operator in the data selection step; A subjective optometry device characterized by performing the above.

2. The subjective ophthalmological examination device according to claim 1, In the candidate data display step, the control unit displays, on the same screen, an objective value candidate display area for displaying the candidate objective values ​​stored in the database, and a spectacle value candidate display area for displaying the candidate spectacle values.

3. 3. The subjective ophthalmological examination device according to claim 1, In the candidate data display step, when the control unit receives a signal input by the operator instructing the operator to display the candidate data display screen, the control unit switches the candidate data display screen to the screen that was displayed before the instruction was input, or displays the candidate data display screen superimposed on the screen that was displayed before the instruction was input.

4. 4. The subjective ophthalmological examination device according to claim 1, In the database, at least a part of the plurality of data items, which are the objective values ​​and the spectacle values, is stored in association with an identifier assigned to each of the subjects, In the data selection step, the control unit A subjective ophthalmology device characterized in that, when one of the candidate objective values ​​and candidate spectacle values ​​displayed on the candidate data display screen is selected, the other data that shares a common subject indicated by the identifier with the selected data is automatically selected.

5. 5. The subjective ophthalmological examination device according to claim 1, In the database, at least a part of the plurality of data, which are the objective values ​​and the spectacle values, is stored in association with an identifier assigned to each of the subjects and a data acquisition date; In the data selection step, the control unit A subjective ophthalmology device characterized in that, if at least one of the data identifier and the data acquisition date of the objective value and the spectacle value selected by the operator differs from those stored in the database, an alert is issued to prompt the operator to confirm whether it is okay to acquire the selected data.

6. 6. The subjective ophthalmological examination device according to claim 1, The database is capable of storing a plurality of measurement results of optical characteristics measured in the past using a subjective optometry device, The control unit displaying the measurement results stored in the database as selection candidates on the display unit; A subjective ophthalmological examination device characterized in that, when at least one of the measurement results displayed as selection candidates is selected by the operator, initial values ​​of the corrective optical system when subjectively measuring the optical characteristics of the subject's eye are set based on the selected measurement result.

7. A subjective optometry program executed in a subjective optometry device that subjectively measures optical characteristics of a subject's eye, The subjective ophthalmological examination device is a corrective optical system that changes the optical characteristics of a target light beam presented to the subject's eye; A control unit; and When the objective values ​​obtained by objectively measuring the optical characteristics of the subject's eye and the spectacle values ​​indicating the optical characteristics of the spectacle lenses worn by the subject are stored in the database, The subjective optometry program is executed by the control unit of the subjective optometry device, a candidate data display step of displaying on a display unit a candidate data display screen simultaneously showing the candidate objective values ​​and the candidate spectacle values ​​selectable by an operator; a data selection step of receiving an instruction from an operator to select at least one of the objective value candidates and the spectacle value candidates displayed on the candidate data display screen; an initial value setting step of setting initial values ​​of the correction optical system when subjectively measuring the optical characteristics of the subject's eye, based on the data selected by the operator in the data selection step; A subjective optometry program that causes the subjective optometry device to execute the above.

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