Visual target presentation device, visual target presentation program, and visual target presentation management program

Abstract

Provided is a visual target presentation device for presenting a visual target to a subject eye, the visual target presentation device comprising a display means for switching and displaying a plurality of examination visual targets, and a control unit. Among the plurality of examination visual targets displayable on the display means, a plurality of frequently used visual targets, which are examination visual targets that are used more frequently than other examination visual targets, can be registered in a visual target registration means. The control unit executes: an external registration step for inputting, from an external storage device, registration data that represents the plurality of frequently used visual targets and registering the plurality of frequently used visual targets represented by the input registration data in the visual target registration means; and a frequently used visual target switching step for switching, in response to an instruction input by a user, a frequently used visual target to be displayed on the display means among the plurality of frequently used visual targets registered in the visual target registration means in the external registration step.

Description

Optotype presentation device, optotype presentation program, and optotype presentation management program

[0001] The present disclosure relates to an optotype presenting device for presenting an optotype to an eye to be examined, an optotype presenting program, and an optotype presentation management program.

[0002] There is known an optotype presenting device for presenting optotypes to a subject's eye. For example, in Patent Document 1, test optotypes displayed on a display are switched by an optotype switching signal.

[0003] JP 2010-233964 A

[0004] It is conceivable to improve the efficiency of switching test optotypes by registering test optotypes that are frequently used by the operator (hereinafter referred to as "high-frequency optotypes") in advance and switching the high-frequency optotype to be displayed on the display means from among the multiple registered high-frequency optotypes. However, in facilities or stores that have multiple optotype presenting devices, it takes time and effort to register the frequently used test optotypes desired by the facility, store, or operator in all of the optotype presenting devices. This also leads to troublesomeness and inconvenience, such as the possibility of registering the wrong test optotype.

[0005] In view of the above-described conventional techniques, the present disclosure has as its technical object to provide an optotype presentation device, an optotype presentation program, and an optotype presentation management program that can easily register optotypes in the optotype presentation device.

[0006] In order to solve the above problems, the present disclosure is characterized by having the following configuration: (1) A optotype presenting device according to a first aspect of the present disclosure is an optotype presenting device for presenting optotypes to an eye to be examined, comprising: display means for switching between and displaying a plurality of test optotypes; and a control unit, wherein, among the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in optotype registration means, and the control unit executes an external registration step of inputting registration data indicating the plurality of high-frequency optotypes from an external storage device and registering the plurality of high-frequency optotypes indicated by the input registration data in the optotype registration means, and a high-frequency optotype switching step of switching, in response to an instruction input by a user, a high-frequency optotype to be displayed on the display means, from the plurality of high-frequency optotypes registered in the optotype registration means by the external registration step. (2) A second aspect of the present disclosure provides an optotype presenting program executed in an optotype presenting device for presenting optotypes to an eye to be examined, the optotype presenting device comprising: a display means for switching between and displaying a plurality of test optotypes; and a control unit; and among the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in an optotype registration means; and the optotype presenting program is executed by the control unit of the optotype presenting device to cause the optotype presenting device to execute an external registration step of inputting registration data indicating the plurality of high-frequency optotypes from an external storage device and registering the plurality of high-frequency optotypes indicated by the input registration data in the optotype registration means; and a high-frequency optotype switching step of switching, in response to an instruction input by a user, the high-frequency optotype to be displayed on the display means from the plurality of high-frequency optotypes registered in the optotype registration means by the external registration step.(3) A third aspect of the present disclosure provides an optotype presentation management program that is connected to an optotype presenting device for presenting optotypes to an eye to be examined and is executed in a management device that manages the optotype presenting device, the optotype presenting device comprising: a display means that switches between and displays a plurality of test optotypes; and among the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in an optotype registration means; and, among the plurality of high-frequency optotypes registered in the optotype registration means, the high-frequency optotypes to be displayed on the display means can be switched in response to an instruction input by a user; and the optotype presentation management program is executed by a control unit of the management device, causing the management device to execute an external registration step of registering, based on registration data indicating the plurality of high-frequency optotypes stored in a storage device, the plurality of high-frequency optotypes indicated by the registration data in the optotype presenting device.

[0007] 1 is an external view of an optotype presenting device. FIG. 2 is a schematic diagram of a control system of the optotype presenting device. FIG. 3 is an example of a display screen. FIG. 4 is an example of a display screen in which registration of a plurality of high-frequency optotypes has been completed. FIG. 5 is an example of a high-frequency optotype registration area before and after registering a high-frequency optotype. FIG. 6 is an example of a high-frequency optotype registration area in which some high-frequency optotypes selected by an examiner are registered. FIG. 7 is an example of a case in which a high-frequency optotype is substituted and registered in the high-frequency optotype registration area. FIG. 8 is a diagram in which a plurality of optotype presenting devices are connected to a network via a management device.

[0008] <Overview> An overview of the visual target presenting device according to this embodiment will be described. Items grouped in < > below can be used independently or in conjunction with each other.

[0009] The optotype presenting device of the present disclosure is a device for presenting an optotype to the subject's eye. For example, the optotype may be at least one of directional optotypes (e.g., Landolt ring optotypes, tumbling E optotypes, etc.) that allow the subject to distinguish directions, character optotypes (e.g., hiragana optotypes, katakana optotypes, alphabet optotypes, etc.) that allow the subject to read letters, and number optotypes that allow the subject to distinguish 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-crowded optotype, etc.), etc.

[0010] The optotype presenting device of the present disclosure may include a display means (e.g., a monitor 30). The display means switches between and displays a plurality of test optotypes. The display means may be a monitor. As an example, the monitor may be an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence) display, or the like. For example, the display means may be a light source and an optotype plate. For example, the display means may be a light source and a DMD (Digital Micromirror Device). The display means may also display a background image. Note that the display means may display both the test optotype and the background image (i.e., superimposing the test optotype on the background image), or may display only the background optotype.

[0011] The optotype presenting device of the present disclosure may include an operating means (e.g., a controller 40). For example, an operating instruction for switching the test optotype to be displayed on the display means is input to the operating means. Also, for example, an operating instruction for registering a high-frequency optotype in an optotype registration means described below is input to the operating means. For example, the operating means may be any operating means that allows an operator (e.g., an examiner or an assistant) to input an operating instruction. As an example, the operating means may include at least one user interface such as a switch, a touch panel, a mouse, or a keyboard.

[0012] The optotype presenting device of the present disclosure may include an optotype registration means (e.g., a memory 60). The optotype registration means registers high-frequency optotypes, which are test optotypes that are used more frequently than other test optotypes, among the multiple test optotypes that can be displayed on the display means. More specifically, among the multiple types of test optotypes that can be presented in tests of the subject's eye, test optotypes that are frequently presented by each facility, store, or user (operator) in tests of the subject's eye are registered as high-frequency optotypes. For example, the aforementioned Landolt ring optotype, tumbling E optotype, hiragana optotype, katakana optotype, alphabet optotype, numeric optotype, etc. may be registered in the optotype registration means. Of course, the information registered in the optotype registration means is not limited to the type of test optotype and may include other settings. For example, the information registered in the optotype registration means may include at least one of settings such as whether or not an auxiliary lens is installed, whether or not the test optotype is displayed in black and white, and whether or not a glare lamp is turned on. However, the optotype registration means may be a storage device provided outside the optotype presenting device (for example, a storage device provided in an external device).

[0013] As will be described in detail later, the optotype presenting device of the present disclosure switches among a plurality of registered high-frequency optotypes a high-frequency optotype to be displayed on the display means. The method of switching the high-frequency optotype registered in the optotype registration means to display on the display means is different from the usual method for switching among a plurality of test optotypes including test optotypes other than the high-frequency optotype. As an example, a screen different from the screen for selecting a normal test optotype (e.g., a screen that displays only the registered high-frequency optotypes as candidates for the test optotype to be displayed on the display means) may be provided to allow the user to select at least one of a plurality of frequently used test optotypes as the test optotype to be displayed on the display means.

[0014] For example, an optotype presenting device can switch between and display various types of test optotypes. However, the test optotypes that are frequently used often vary depending on the operating conditions of the facility or store where the optotype presenting device is installed, the operator's test method, etc. It takes time and effort for a user to search for a desired test optotype from among a large number of test optotypes for each test and display it on the display means. For this reason, by registering frequently used test optotypes (high-frequency optotypes) in the optotype registration means, the time and effort required to search for and display the desired test optotype can be reduced.

[0015] The control unit of the optotype presenting device of the present disclosure may execute an external registration step. In the external registration step, the control unit inputs registration data indicating high-frequency optotypes from an external storage device and causes the control unit to register the high-frequency optotypes indicated by the input registration data in the optotype registration means. The external storage device may be a storage device that is detachable from the optotype presenting device. Alternatively, the external storage device may be a storage device of an external device different from the optotype presenting device. In this case, the optotype presenting device may input the registration data from the external device via at least one of wired communication, wireless communication, network communication, etc. For example, the external storage device may be a personal computer (PC), a storage medium (e.g., a USB memory, an SD card, etc.), a server, a cloud, etc.

[0016] For example, some facilities or stores that install optotype presentation devices have multiple optotype presentation devices and may want to unify the high-frequency optotypes across the multiple optotype presentation devices. In this case, a user may register the wrong high-frequency optotype in the optotype presentation devices. Furthermore, registering high-frequency optotypes individually in multiple optotype presentation devices is time-consuming and labor-intensive. However, by inputting registration data indicating the high-frequency optotypes from an external storage device and registering the high-frequency optotypes based on the registration data, the optotype presentation device can prevent registration errors or omissions when registering high-frequency optotypes for each device, thereby reducing the time and labor required for registration.

[0017] The control unit of the optotype presenting device of the present disclosure may execute a high-frequency optotype switching step. In the high-frequency optotype switching step, the control unit switches a high-frequency optotype to be displayed on the display means from among a plurality of high-frequency optotypes registered in the optotype registration means in response to an instruction input by a user (operator). As a result, a frequently used test optotype is efficiently switched and displayed.

[0018] The control unit may output the frequently used test optotypes registered in the optotype registration means to the outside by an output means described later. In this case, for example, in a facility or store where a plurality of optotype presenting devices are installed, the frequently used optotypes registered in the optotype registration means can be easily unified.

[0019] The control unit of the optotype presenting device of the present disclosure may execute an output step. In the output step, the control unit outputs the registration data of the high-frequency optotype registered in the optotype registration means to an external storage device. For example, the external storage device may be a personal computer (PC), a storage medium (e.g., a USB memory, an SD card, etc.), a server, a cloud, etc.

[0020] For example, the user can use an optotype presenting device in which high-frequency optotypes have been manually registered using the operating means as a reference, and output the registration data of the high-frequency optotypes from the reference optotype presenting device to an external storage device. In this case, for example, it may be possible to further execute an output step of registering, in the optotype registration means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes, among a plurality of test optotypes that can be displayed on the display means of the optotype presenting device, and outputting the registration data of the plurality of high-frequency optotypes registered in the optotype registration means to the external storage device.

[0021] Furthermore, the user can input the high-frequency optotypes output from the reference optotype presenting device to an external storage device into another optotype presenting device, so that the user can easily and appropriately register the high-frequency optotypes registered in the reference optotype presenting device in the other optotype presenting device.

[0022] The control unit may register in the optotype registration means a part of high-frequency optotypes selected by the user from among the plurality of high-frequency optotypes indicated by the registration data input from the external storage device. As an example, the user may select and register only the test optotypes with the highest priority from among the high-frequency optotypes indicated by the input registration data. Of course, a predetermined number of high-frequency optotypes from among the high-frequency optotypes indicated by the input registration data may be automatically registered in the optotype registration means.

[0023] For example, the number of high-frequency optotypes indicated by the input registration data may be greater than the number that can be registered in the optotype registration means. Furthermore, for example, among the high-frequency optotypes indicated by the input registration data, each facility, store, or operator may use only test optotypes with a higher priority. Therefore, by having the user select and register the high-frequency optotypes to be registered in the optotype registration means, it becomes easier to register high-frequency optotypes that are more appropriate for each facility, store, or operator in the optotype registration means.

[0024] When at least one of the multiple high-frequency optotypes indicated by the registration data input from the external storage device cannot be displayed on the display means, the control unit may register one of the multiple test optotypes that can be displayed on the display means as a high-frequency optotype to replace the high-frequency optotype that cannot be displayed in the optotype registration unit. For example, when the Landolt ring is included in some of the high-frequency optotypes indicated by the input registration data but the Landolt ring cannot be displayed on the display means, the control unit may register, in the optotype registration unit, a test optotype that can be used to perform a test similar to the Landolt ring (e.g., a tumbling E optotype that has a directionality that allows the subject to distinguish directions, similar to the Landolt ring), among the multiple test optotypes that can be displayed on the display means, as a high-frequency optotype to replace the Landolt ring. This allows a high-frequency optotype that can be used to perform a test similar to that when the high-frequency optotype indicated by the input registration data itself is used, regardless of the test optotype that can be displayed on the display means, to be easily and appropriately registered in the optotype registration unit.

[0025] The specific method for determining a test optotype to substitute for a high-frequency optotype that cannot be displayed can be selected as appropriate. For example, if there are multiple models of optotype presenting devices, correspondence data (e.g., table data, etc.) that associates test optotypes of one model with test optotypes of other models that can be substituted for test optotypes of another model (i.e., that can perform a similar test) may be stored in a storage device. The control unit may automatically determine a test optotype to substitute for a high-frequency optotype that cannot be displayed by referring to the correspondence data.

[0026] 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.

[0027] Example An example of the optotype presenting device according to this embodiment will be described.

[0028] <Device Configuration> FIG. 1 is an external view of an optotype presenting device 1. The optotype presenting device 1 of this embodiment includes a housing 20, a monitor 30, and a controller 40. A monitor (an example of a display unit) 30 for presenting optotypes is disposed on the front (front face) of the housing 20 of the optotype presenting device 1. The monitor 30 serves as a display unit and can display optotypes. The controller 40 serves as an operation unit and is operated by an examiner to operate the optotype presenting device 1. The controller 40 includes a switch unit 41, a monitor 42, and a connection unit 43. The switch unit 41 inputs operation instructions for various settings (e.g., selecting a test optotype to be displayed on the monitor 30, changing the brightness of the test optotype, etc.). The monitor 42 displays an operation screen, which will be described later. For example, the operation screen may display various information (e.g., test results of the subject's eye, etc.). The monitor 42 may also function as a touch panel that doubles as the switch unit 41. A signal from the controller 40 is output to the control unit 50 via wired communication, wireless communication, etc. The connection unit 43 inputs and outputs data to and from an external storage device, etc.

[0029] <Controller> Fig. 2 is a schematic diagram of the control system of the optotype presenting device 1. For example, the controller 50 includes a CPU (processor), RAM, ROM, etc. The CPU controls the operation of each part in the controller 40. Various types of information are temporarily stored in the RAM. The ROM stores various programs executed by the CPU, a decoder circuit that decodes operation signals, an arithmetic formula for calculating the display size of the test optotype, etc. The controller 50 may include multiple controllers (i.e., multiple processors).

[0030] The control unit 50 is connected to the monitor 30, the controller 40, a non-volatile memory 60 (hereinafter referred to as the memory 60), and the like. The control unit 50 and the monitor 30 are connected via wired or wireless communication. The memory 60 is a non-transitory storage medium that can retain its contents even when the power supply is cut off. For example, the memory 60 stores a reference image (vector image) of the test target. For example, the memory 60 may be a hard disk drive, a flash ROM, a USB memory, an SD card, or the like. Note that in this embodiment, the description will be given on the assumption that the control unit 50 and the memory 60 are provided inside the controller 40. However, the control unit 50 and the memory 60 may be provided outside the controller 40.

[0031] <Control Operation> A control operation in the example of the optotype presenting device 1 having the above-described configuration will be described.

[0032] <Registration of High-Frequency Optotypes> The optotype presenting device 1 in this embodiment can register, in the memory 60, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes, among a plurality of test optotypes that can be displayed on the monitor 30. A method for registering high-frequency optotypes will be described below.

[0033] 3 shows an example of a display screen 100 displayed on the monitor 42 of the controller 40. For example, the display screen 100 has an operation screen area 110, a high-frequency target registration area 120, and the like.

[0034] The operation screen area 110 includes an optotype selection area 111, an auxiliary operation selection area 112, etc. The optotype selection area 111 displays icons of test optotypes that can be displayed by the optotype presenting device 1. For example, the test optotype icons may include a Landolt ring optotype, a tumbling E optotype, a hiragana optotype, a katakana optotype, an alphabet optotype, and a numeric optotype. The auxiliary operation selection area 112 displays icons for the examiner to perform operations to assist in the display of the test optotype (hereinafter referred to as display auxiliary operations). For example, display auxiliary operations include whether or not to place an auxiliary lens, inverting the black and white of the test optotype, turning on a glare lamp, etc. The operation screen area 110 may also display an operation image including information on the optical characteristics of the optotype light beam emitted from the monitor 30 of the optotype presenting device 1 toward the subject's eye. For example, the operation image may display values ​​related to the optical characteristics of the optotype light beam for each type of optical characteristic.

[0035] The high-frequency optotype registration area 120 includes a high-frequency optotype selection area 121, an edit button 122, an input button 123, an output button 124, etc. The high-frequency optotype selection area 121 displays icons 125 of registered high-frequency optotypes. The edit button 122 is operated to switch the display mode of the high-frequency optotype selection area 121 to an edit mode in which high-frequency optotypes can be edited. For example, the edit mode is a mode in which icons displayed in the optotype selection area 111 and the auxiliary operation selection area 112 can be registered in the high-frequency optotype selection area 121. The input button 123 is operated to input registration data of multiple high-frequency optotypes from an external storage device. The output button 124 is operated to output registration data of multiple high-frequency optotypes registered in the optotype presentation device to an external storage device.

[0036] The examiner can register multiple high-frequency optotypes using the display screen 100 displayed on the monitor 42 of the controller 40. For example, the examiner presses the edit button 122. For example, the control unit 50 switches the display mode of the high-frequency optotype selection area 121 to an edit mode that allows editing of high-frequency optotypes based on an operation signal from the edit button 122. For example, the examiner selects an icon of a test optotype to be registered as a high-frequency optotype from among the icons of test optotypes displayed in the optotype selection area 111 and registers it in the high-frequency optotype selection area 121 by various operation techniques such as drag-and-drop. Note that when registering icons of test optotypes in the high-frequency optotype selection area 121, the examiner may select and register the icons one by one, or may select and register multiple icons at once. In this case, the arrangement of the icons of test optotypes to be registered in the high-frequency optotype selection area 121 may be arranged in any order, column, or other arrangement. The icons to be registered in the high-frequency target selection area 121 may include icons for display assist operations displayed in the assist operation selection area 112 (i.e., icons for display assist operations may also be registered as high-frequency targets).

[0037] FIG. 4 shows an example of the display screen 100 after registration of multiple high-frequency optotypes is complete. For example, the examiner registers an icon 125 to be registered as a high-frequency optotype in the high-frequency optotype selection area 121, and then presses the edit button 122 again. For example, the control unit 50 terminates the edit mode based on an operation signal from the edit button 122. The control unit 50 also registers data indicating the multiple high-frequency optotypes registered in the high-frequency optotype selection area 121 as registration data of the high-frequency optotype (stored in the memory 60 in this embodiment). As a result, the multiple registered high-frequency optotypes are displayed as icons in the high-frequency optotype selection area 121. For example, if five high-frequency optotypes are registered, the examiner can select a desired test optotype from the five registered high-frequency optotypes and display it on the monitor 30. As a result, the time and effort required to search for and display the desired test optotype is reduced.

[0038] <Output of Registration Data of High-Frequency Optotypes> As described above, in this embodiment, the examiner can register a high-frequency optotype in the optotype presenting device 1. Here, in a facility or store that has multiple optotype presenting devices, the facility, store, or operator may register a desired test optotype as a common high-frequency optotype for the multiple optotype presenting devices. In this case, when registering a high-frequency optotype in the multiple optotype presenting devices, registration errors or omissions may occur, and it may take time and effort to complete the registration. Therefore, in this embodiment, registration data of pre-registered high-frequency optotypes is input and output between optotype presenting devices. The input and output of registration data of high-frequency optotypes will be described below.

[0039] For example, the examiner inserts an external storage device (not shown, hereinafter referred to as a storage medium), such as a USB memory or an SD card, into the connector 43 (see FIG. 1 ) of the controller 40. For example, when the control unit 50 detects that the storage medium has been connected to the connector 43 (e.g., when the control unit 50 is able to read and write information between the control unit 50 and the storage medium), the control unit 50 displays a message on the display screen 100 (see FIG. 4 ) indicating that reading and writing of information between the control unit 50 and the storage medium is now possible. For example, when the examiner confirms the message displayed on the display screen 100, the control unit 50 presses the output button 124. For example, based on an operation signal from the output button 124, the control unit 50 outputs the registered data of the high-frequency optotypes stored in the memory 60 (in other words, the multiple high-frequency optotypes registered in the high-frequency optotype selection area 121) to the storage medium and stores the data in the storage medium. For example, the examiner removes the storage medium from the connector 43.

[0040] <Input of Registration Data of High-Frequency Optotypes> For example, the examiner inserts a storage medium storing the registration data of high-frequency optotypes into the connection unit 43 of a controller 40 provided in a second optotype presenting device different from the optotype presenting device 1. In this embodiment, the second optotype presenting device to which the registration data of high-frequency optotypes is input has the same configuration (device configuration, same test optotype) as the optotype presenting device 1, and therefore a description thereof will be omitted.

[0041] For example, when the control unit 50 detects that a storage medium has been connected to the connection unit 43 (for example, when it becomes possible to read and write information between the control unit 50 and the storage medium), it displays a message on the display screen 100 (see FIG. 4 ) indicating that it is now possible to read and write information between the control unit 50 and the storage medium. For example, when the examiner confirms the message displayed on the display screen 100, he or she presses the input button 123 in the high-frequency optotype registration area 120. For example, based on an operation signal from the input button 123, the control unit 50 inputs and stores the registration data of the high-frequency optotype stored in the storage medium into the memory 60.

[0042] 5 shows an example of the high-frequency optotype registration area 120 before and after registering a high-frequency optotype. Through the above operation, the input registration data of the high-frequency optotype is registered in the second optotype presenting device. In this embodiment, once the input of the registration data of the high-frequency optotype is completed, the high-frequency optotype selection area 121a before registration displayed on the display screen 100 of the second optotype presenting device displays a plurality of icons corresponding to each of the plurality of registration data of the high-frequency optotype output from the optotype presenting device 1, as in the high-frequency optotype selection area 121b after registration. In this way, by inputting and outputting the registration data of the pre-registered high-frequency optotype between optotype presenting devices, it is possible to prevent registration errors or omissions when registering the high-frequency optotype for each device, and also to reduce the time and effort required for registration.

[0043] <Presenting a Test Optotype Selected from High-Frequency Optotypes> For example, the second optotype presenting device switches the high-frequency optotype to be displayed on the monitor 30 of the second optotype presenting device from among the multiple high-frequency optotypes registered in the input registration data of high-frequency optotypes, in response to an instruction input by the examiner. For example, the examiner operates the switch unit 41 or the monitor 42 of the second optotype presenting device to specify an icon of a desired test optotype from the high-frequency optotype selection area 121 on the display screen 100. The control unit 50 displays the specified test optotype on the monitor 30 based on an operation signal from the switch unit 41 or the monitor 42. Similarly, the examiner specifies the icon of the next test optotype from the high-frequency optotype selection area 121. Based on the operation signal, the control unit 50 switches to the specified test optotype and displays it on the monitor 30. In this way, the examiner can reduce the time and effort required to search for and display the desired test optotype by switching the test optotype to be displayed on the monitor 30 of the optotype presentation device based on the registration data of the high-frequency optotype registered in the high-frequency optotype selection area 121.

[0044] <Modification Example> In the above embodiment, when the registration data of the high-frequency optotypes of the optotype presenting device 1 is input to a second optotype presenting device different from the optotype presenting device 1, all of the registration data of the high-frequency optotypes registered in a storage medium is input to the high-frequency optotype selection area 121 (see FIG. 5 ). However, the present invention is not limited to this. For example, it is also possible to register in the high-frequency optotype selection area 121 some high-frequency optotypes selected by the examiner from among the multiple high-frequency optotypes indicated by the registration data input from the storage medium.

[0045] For example, the examiner inserts a storage medium into the connection unit 43 (see FIG. 1 ) of the controller 40 of the second optotype presenting device. For example, when the control unit 50 detects that the storage medium has been connected to the connection unit 43 (for example, when it becomes possible to read and write information between the control unit 50 and the storage medium), it displays a message indicating that it is now possible to read and write information between the control unit 50 and the storage medium on the display screen 100 (see FIG. 4 ), and also displays an icon indicating the registered data of the high-frequency optotype to be input from the recording medium in the high-frequency optotype selection area 121.

[0046] 6 shows an example of the high-frequency optotype registration area 120 in which some high-frequency optotypes selected by the examiner are registered. For example, the examiner selects a high-frequency optotype 130 to be input to the second optotype presenting device from the icons of high-frequency optotypes displayed in the high-frequency optotype selection area 121c and presses the input button 123. For example, the control unit 50 inputs and stores the selected high-frequency optotype 130 from the registration data of high-frequency optotypes stored in the storage medium into the memory 60 based on an operation signal from the input button 123. As a result, the high-frequency optotype 130 selected by the examiner is registered in the high-frequency optotype selection area 121d of the second optotype presenting device, and an icon of the high-frequency optotype 130 is displayed. In this way, by registering some high-frequency optotypes selected by the examiner from the multiple high-frequency optotypes indicated by the registration data input from the storage medium in the high-frequency optotype selection area 121, it is possible to register test optotypes with higher priority from the input registration data. As a result, it is possible to register high-frequency optotypes more desired by the examiner.

[0047] Of course, the method of registering some of the high-frequency optotypes described above is not limited to inputting them from a recording medium, and when outputting the registration data of the high-frequency optotypes, data of some of the high-frequency optotypes selected by the examiner may be output. As an example, the examiner selects the high-frequency optotypes 130 that he or she wishes to output to the recording medium and presses the output button 124. Furthermore, for example, the control unit 50 may output the registration data of the high-frequency optotypes stored in the memory 60 to the storage medium, which is some of the high-frequency optotypes selected by the examiner from among the multiple high-frequency optotypes indicated by the registration data to be output to the storage medium, based on an operation signal from the output button 124, and store the high-frequency optotypes in the storage medium.

[0048] In the above embodiment, when the registration data of the high-frequency optotypes of the optotype presenting device 1 registered in a storage medium is input to a second optotype presenting device different from the optotype presenting device 1, the second optotype presenting device to which the registration data of the high-frequency optotypes is input has the same test optotypes as those of the optotype presenting device 1. However, the present invention is not limited to this. For example, when the second optotype presenting device is unable to display on the monitor 30 at least one of the multiple high-frequency optotypes indicated by the registration data input from the storage medium, the second optotype presenting device may register one of the multiple test optotypes that can be displayed on the monitor 30 in the high-frequency optotype registration area 120 (see FIG. 4 ) as a high-frequency optotype to substitute for the high-frequency optotype that cannot be displayed.

[0049] For example, the examiner inserts the storage medium into the connection unit 43 (see FIG. 1 ) of the controller 40 of the second optotype presenting device, and then presses the input button 123 in the high-frequency optotype registration area 120. For example, the control unit 50 checks whether the registration data of the high-frequency optotype (test optotype) input based on the operation signal of the input button 123 is a test optotype that can be displayed on the monitor 30 of the second optotype presenting device. As an example, the control unit 50 may compare each test optotype indicated by the input registration data of the high-frequency optotype with data of the test optotype that can be displayed on the monitor 30 of the second optotype presenting device, and, based on the comparison result, substitute a test optotype that can be used to perform a similar test.

[0050] 7 shows an example of a case where a high-frequency optotype is substituted and registered in the high-frequency optotype registration area 120. For example, the control unit 50 compares each test optotype indicated by the input registration data of the high-frequency optotype with data of the test optotype that can be displayed on the monitor 30 of the second optotype presenting device. For example, if the Landolt ring optotype 140 is included in each test optotype indicated by the input registration data of the high-frequency optotype, but the second optotype presenting device cannot display the Landolt ring optotype 140 on the monitor 30, the control unit 50 substitutes the Tumbling E optotype 141, which can be used to perform a test similar to the Landolt ring optotype, from the data of the test optotypes that can be displayed on the monitor 30 of the second optotype presenting device, as a high-frequency optotype to be substituted for the Landolt ring optotype 140, and registers the Tumbling E optotype 141 in the high-frequency optotype selection area 121. Of course, the control unit 50 may display a message or the like in the high-frequency optotype registration area 120 to prompt the examiner to decide whether to substitute a test optotype with one that can perform a similar test, based on the comparison result. Furthermore, for example, the control unit 50 may display the high-frequency optotype selection area 121 in an edit mode so that the examiner can directly edit the test optotype to be substituted. The method for determining the test optotype to be substituted may be selected appropriately. For example, when multiple optotype presenting devices are present, a table that associates test optotypes that can be substituted among the multiple optotype presenting devices may be stored in the memory 60. For example, the control unit 50 may automatically determine the test optotype to be substituted by referencing the corresponding test optotype from the table.

[0051] In this way, for example, the types of test optotypes that can be displayed may differ depending on the optotype presenting device. Therefore, if the optotype presenting device that inputs the registration data of the high-frequency optotype cannot display the test optotype corresponding to the registration data of the high-frequency optotype, it may be impossible to input the registration data of the high-frequency optotype as the test optotype. Therefore, regardless of the test optotype that can be displayed, a high-frequency optotype that can perform the same test as when the high-frequency optotype indicated by the input registration data itself is used is substituted and easily and appropriately registered in the memory 60.

[0052] In the above embodiment, a configuration has been described in which registration data of a high-frequency optotype registered in the optotype presenting device 1 is output to a storage medium, and the registration data of the high-frequency optotype stored in the storage medium is input to a second optotype presenting device different from the optotype presenting device 1. However, the present invention is not limited to this. For example, the registration data of the high-frequency optotype may be input to a plurality of optotype presenting devices from a management device (e.g., a tablet PC, a notebook PC, a smartphone, a desktop PC, etc.) that manages the optotype presenting devices.

[0053] 8 is a diagram showing a network connection of a plurality of optotype presentation devices via a management device. For example, the management device 200 is connected to the plurality of optotype presentation devices via at least one of wireless communication, wired communication, communication via a network (e.g., the Internet), etc., and is capable of communicating with the plurality of optotype presentation devices.

[0054] For example, the examiner creates registration data A of high-frequency optotypes in the management device 200 and saves it in a shared folder 210 on the network. For example, the control unit 50 (see FIG. 2) of each optotype presenting device acquires information on the registration data A of high-frequency optotypes saved in the shared folder 210 on the network at startup or the like, and displays a message on the display screen 100 (see FIG. 3) indicating that there is available registration data of high-frequency optotypes and that data reading and writing is now possible. For example, when the examiner confirms the message displayed on the display screen 100 of each optotype presenting device, he or she presses the input button 123 in the high-frequency optotype registration area 120. For example, the control unit 50 of each optotype presenting device inputs the registration data A of high-frequency optotypes saved in the shared folder 210 into the memory 60 and stores it there, based on an operation signal from the input button 123.

[0055] Note that, as the registration data of the high-frequency optotype, a plurality of registration data such as registration data A1, registration data A2, registration data A3, etc. may be stored in the shared folder 210. In this case, the examiner may select desired registration data from the plurality of registration data, input the selected data into the memory 60, and store it therein. Also, for example, the control unit 50 of each optotype presenting device may automatically select the latest registration data from the plurality of registration data stored in the shared folder 210, and input the latest registration data into the memory 60 and store it therein.

[0056] Of course, this is not limited to the case where information on the registered data A of the high-frequency optotype is acquired at the time of startup. For example, when the registered data of the high-frequency optotype is saved in a shared folder 210 on the network, the control unit 50 of each optotype presenting device may be configured to display on the display screen 100 a sign (for example, at least one of a window, a mark, an icon, a letter, a number, a symbol, etc.) indicating that the registered data of the high-frequency optotype is saved, and to input and store the registered data of the high-frequency optotype into the memory 60 of each optotype presenting device when the examiner presses the input button 123.

[0057] Furthermore, as described above, the examiner performs an operation to input the registration data for each optotype presenting device, but this is not limited to this. As an example, the control unit 50 of each optotype presenting device may automatically acquire information on the registration data of the high-frequency optotype stored in the shared folder 210 on the network upon startup and store it in the memory 60. That is, the examiner may start each optotype presenting device without performing any operation on each optotype presenting device, and the registration data of the high-frequency optotype stored in the shared folder 210 may be automatically input and stored in the memory 60 of each optotype presenting device. As another example, the registration data of the high-frequency optotype may be input and stored in the memory 60 of each optotype presenting device by operating the management device 200.

[0058] In this way, by registering the registration data of the high-frequency optotypes via the management device, it becomes even easier to register the registration data of the high-frequency optotypes in multiple optotype presenting devices. Furthermore, if multiple optotype presenting devices are network-connected via the management device, the registration data of the high-frequency optotypes can be easily obtained even if they are installed in locations physically distant from the management device (even if they are not installed in the same facility).

[0059] REFERENCE SIGNS LIST 1 optotype presenting device 20 housing 30 monitor 40 controller 50 control unit 100 display screen 200 management device

Claims

1. An optotype presenting device for presenting optotypes to an eye to be examined, comprising: display means for switching between and displaying a plurality of test optotypes; and a control unit; wherein, among the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in an optotype registration means, and the control unit executes the following steps: an external registration step for inputting registration data indicating the plurality of high-frequency optotypes from an external storage device and registering the plurality of high-frequency optotypes indicated by the input registration data in the optotype registration means; and a high-frequency optotype switching step for switching, in accordance with an instruction input by a user, the high-frequency optotype to be displayed on the display means from the plurality of high-frequency optotypes registered in the optotype registration means by the external registration step.

2. A visual target presenting device as described in claim 1, characterized in that the control unit further executes an output step of outputting the registration data of the plurality of high-frequency visual targets registered in the visual target registration means to an external storage device.

3. A visual target presenting device as claimed in claim 1 or 2, characterized in that in the external registration step, the control unit causes the visual target registration means to register a portion of the high-frequency visual targets selected by the user from the plurality of high-frequency visual targets indicated by the registration data input from the external storage device.

4. An optotype presenting device according to any one of claims 1 to 3, characterized in that in the external registration step, if at least one of the plurality of high-frequency optotypes indicated by the registration data input from the external storage device cannot be displayed on the display means, the control unit causes the optotype presenting device to register one of the plurality of test optotypes that can be displayed on the display means as the high-frequency optotype to replace the high-frequency optotype that cannot be displayed.

5. An optotype presenting program executed in an optotype presenting device for presenting optotypes to an eye to be examined, the optotype presenting device comprising: a display means for switching between and displaying a plurality of test optotypes; and a control unit; wherein, of the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in an optotype registration means; and the optotype presenting program, when executed by the control unit of the optotype presenting device, causes the optotype presenting device to execute: an external registration step of inputting registration data indicating the plurality of high-frequency optotypes from an external storage device and registering the plurality of high-frequency optotypes indicated by the input registration data in the optotype registration means; and a high-frequency optotype switching step of switching, in accordance with an instruction input by a user, the high-frequency optotype to be displayed on the display means from the plurality of high-frequency optotypes registered in the optotype registration means by the external registration step.

6. An optotype presentation management program that is connected to an optotype presenting device for presenting optotypes to an eye to be examined and is executed in a management device that manages the optotype presenting device, wherein the optotype presenting device comprises: a display means that switches between and displays a plurality of test optotypes; and among the plurality of test optotypes that can be displayed on the display means, a plurality of high-frequency optotypes that are test optotypes that are used more frequently than other test optotypes can be registered in an optotype registration means; and among the plurality of high-frequency optotypes registered in the optotype registration means, the high-frequency optotypes to be displayed on the display means can be switched in accordance with an instruction input by a user; and the optotype presentation management program is executed by a control unit of the management device, causing the management device to execute an external registration step of registering the plurality of high-frequency optotypes indicated by the registration data in the optotype registration means of the optotype presenting device, based on registration data indicating the plurality of high-frequency optotypes stored in a storage device.

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