Ophthalmological information processing device and ophthalmological information processing program

Abstract

To provide an ophthalmologic information processing device capable of improving efficiency of diagnosis related to nearsightedness, and an ophthalmologic information processing program.SOLUTION: A control part of an ophthalmologic information processing device obtains value of ocular axial length, value of refractive power of the whole eye, and value related to corneal refractive power as ophthalmologic information of the eye to be tested by identifying an inspection period (S51, S52 and S53). The control part generates drawing data for drawing one of diagrams displayed by arranging time serially according to the inspection period respective values corresponding to the identical eye to be tested acquired in the processing S51, S52, and S53, and S6 (S11 and S15).SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present disclosure relates to an ophthalmological information processing device and an ophthalmological information processing program. [Background technology]

[0002] Conventionally, there has been known an ophthalmologic information processing device that presents ophthalmologic information. Patent Document 1 discloses an ophthalmologic device that measures the refractive power and intraocular distance of a subject's eye and displays changes over time in the measured refractive power and intraocular distance of the subject's eye on a display unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-13391 Summary of the Invention [Problem to be solved by the invention]

[0004] There are several types of myopia, including axial myopia caused by excessive elongation of the axial length of the eye, refractive myopia caused by excessive refractive power of the cornea or lens, and progressive myopia caused by keratoconus, an eye disease. Observing changes in axial length can be useful in diagnosing axial myopia. Corneal refractive power is taken into account in diagnosing refractive myopia. In addition to methods that analyze the shape of the corneal surface, methods such as those described in Japanese Patent Publication No. 6707239 may also be used to diagnose keratoconus. Thus, various pieces of information must be considered to perform a comprehensive myopia diagnosis. Conventional ophthalmic devices have difficulty in sufficiently improving the efficiency of myopia diagnosis.

[0005] An object of the present disclosure is to provide an ophthalmological information processing device and an ophthalmological information processing program that can improve the efficiency of myopia diagnosis. [Means for solving the problem]

[0006] An ophthalmological information processing device provided by a typical embodiment of the present disclosure is an ophthalmological information processing device that processes ophthalmological information of a subject's eye, and a control unit of the ophthalmological information processing device executes a value acquisition process that acquires the ophthalmological information of the subject's eye, such as the value of the axial length, the value of the refractive power of the entire eye, and the value related to the corneal refractive power, by specifying the examination time, and a drawing data generation process that generates drawing data for drawing a single diagram in which the values ​​corresponding to the same subject's eye acquired in the value acquisition process are displayed in chronological order according to the examination time.

[0007] An ophthalmological information processing program provided by a typical embodiment of the present disclosure is an ophthalmological information processing program for processing ophthalmological information of an eye, and causes a computer to execute a value acquisition step of acquiring the ophthalmological information of the subject eye, such as a value of the axial length, a value of the refractive power of the entire eye, and a value related to the corneal refractive power, by specifying the examination time, and a drawing data generation step of generating drawing data for drawing a single diagram in which the values ​​corresponding to the same subject eye acquired in the value acquisition step are displayed in chronological order according to the examination time.

[0008] The ophthalmological information processing device and ophthalmological information processing program according to the present disclosure can improve the efficiency of myopia diagnosis. [Brief explanation of the drawings]

[0009] [Figure 1] 2 is a block diagram showing the electrical configuration of the ophthalmologic information-processing device 1. FIG. [Figure 2] FIG. 2 is an explanatory diagram of measurement value history data 20. [Figure 3] FIG. 2 is an explanatory diagram of treatment history data 30. [Figure 4] FIG. 2 is an explanatory diagram of myopia-related data 40. [Figure 5] 10 is a flowchart of ophthalmologic information processing. [Figure 6] 10 is a flowchart of an output content change process. [Figure 7] FIG. 10 is an explanatory diagram showing an example of a chart 50 corresponding to the initial drawing data. [Figure 8] FIG. 6 is an explanatory diagram showing an example of a chart 60 corresponding to drawing data. [Figure 9] FIG. 10 is an explanatory diagram showing an example of a chart 70 corresponding to drawing data. [Figure 10] FIG. 10 is an explanatory diagram showing an example of a chart 80 corresponding to drawing data. [Figure 11] FIG. 2 is an explanatory diagram of measurement value history data 21. [Figure 12] 10 is a flowchart of ophthalmologic information processing in the second embodiment. [Figure 13] FIG. 10 is an explanatory diagram showing an example of a chart 90 corresponding to the initial drawing data. [Figure 14] FIG. 1 is an explanatory diagram showing an example of a diagram 100 corresponding to drawing data. [Figure 15] FIG. 1 is an explanatory diagram showing an example of a diagram 110 corresponding to drawing data. [Figure 16] FIG. 10 is an explanatory diagram showing an example of a diagram 120 corresponding to drawing data. DETAILED DESCRIPTION OF THE INVENTION

[0010] <Summary> The control unit of the ophthalmologic information processing device of the first aspect exemplified in the present disclosure acquires values ​​related to corneal refractive power in addition to values ​​of axial length and total eye refractive power. The control unit generates drawing data for drawing a single chart displaying the acquired values ​​corresponding to the same subject's eye in chronological order according to the examination time. This allows the ophthalmologic information processing device to provide a user, such as a doctor, with a single chart displaying values ​​related to axial length, total eye refractive power, and corneal refractive power in chronological order according to the examination time. Therefore, by allowing the user to view a single chart, the ophthalmologic information processing device allows the user to determine the type of myopia and the progression of myopia in the subject's eye from multiple angles. Therefore, the ophthalmologic information processing device can improve the efficiency of myopia diagnoses.

[0011] The value relating to the corneal refractive power may include at least either a value indicating the corneal refractive power or a value indicating the probability of keratoconus, which is calculated based on the corneal refractive power.

[0012] For example, if the value indicating the corneal refractive power displayed on one chart is high, the user can infer that the type of myopia of the subject's eye is refractive myopia. Furthermore, if the value indicating the corneal refractive power changes rapidly, the user can suspect that the subject's eye has keratoconus. Furthermore, if a value indicating the probability of keratoconus, calculated based on the corneal refractive power, is displayed on one chart, the user can easily identify the possibility that the subject's eye has keratoconus. On the other hand, if the value related to the corneal refractive power is normal, the user can focus on the progression of the subject's axial myopia. In this way, the ophthalmologic information processing device allows the user to determine the type and cause of myopia from multiple perspectives.

[0013] The control unit may execute a selection information acquisition process to acquire selection information for selecting which of the values ​​related to the axial length, the refractive power of the entire eye, and the corneal refractive power to display in one chart. The drawing data generation process may generate drawing data corresponding to the selection information acquired by the selection information acquisition process.

[0014] For example, after identifying the type of myopia, the user may want to focus on the change in the identified type of myopia over time by displaying values ​​corresponding to the identified type of myopia on a chart, while not displaying values ​​that do not correspond to the identified type of myopia on a chart. The control unit can execute the selection information acquisition process, allowing the user to arbitrarily select values ​​to be displayed on one chart, thereby improving the efficiency of diagnosis.

[0015] The drawing data generation process may generate drawing data with the time series range displayed in one chart being from the earliest examination time to the latest examination time.

[0016] In this case, the control unit can generate drawing data for drawing a single chart that shows all of the values ​​acquired by the value acquisition process from the earliest examination date to the latest examination date. Therefore, the ophthalmologic information processing device can allow the user to view the history of the myopia state of the subject's eye in a single chart, allowing the user to easily observe even long-term myopia trends.

[0017] The control unit may execute a range acquisition process to acquire range designation information that designates a range of time series to be displayed in one chart. The drawing data generation process may generate drawing data that designates a range of time series to be displayed in one chart in accordance with the range designation information acquired by the range acquisition process.

[0018] For example, a user who has identified the type of myopia of a subject's eye by looking at a single chart may want to observe the progression of the identified type of myopia over a period of time. The control unit can execute range acquisition processing, allowing the user to arbitrarily specify the time-series range to be displayed on a single chart.

[0019] The control unit may execute a treatment information acquisition process to acquire treatment information indicating the content of a treatment for the subject's eye and the time when the treatment was performed. The drawing data generation process may generate drawing data that reflects the treatment information in a chronological order.

[0020] For example, various treatments may be performed on the subject's eye, such as prescription of glasses, contact lenses, medications, and surgery depending on the level of myopia. The control unit can execute a treatment information acquisition process, and thus can present a single chart reflecting the treatment information to the user. By viewing the single chart reflecting the treatment information, the user can determine the level of myopia in relation to the various treatments.

[0021] By executing the ophthalmologic information processing program of the second aspect exemplified in the present disclosure, the efficiency of myopia diagnosis is improved.

[0022] <Embodiment> A first embodiment, which is one of typical embodiments according to the present disclosure, will be described below with reference to the drawings. The drawings are used to explain technical features that may be adopted by the present invention, and the configurations and the like described are merely illustrative examples and are not intended to limit the scope of the present invention.

[0023] The ophthalmic information processing device 1 according to the first embodiment is an ophthalmic device that performs at least one of photographing, examining, and measuring a subject's eye. The ophthalmic device may be any of various ophthalmic devices, such as an OCT device, a scanning laser ophthalmoscope (SLO), a fundus camera, a corneal endothelial cell photographing device, an axial length measurement device, an ocular refractive power measurement device, and an intraocular pressure measurement device. The ophthalmic information is information obtained by photographing, examining, and measuring using the ophthalmic device. In the first embodiment, the ophthalmic information processing device 1 is an optical interference type axial length measurement device that can obtain the axial length and the refractive power of the entire eye as ophthalmic information by examining the subject's eye. The refractive power of the entire eye will hereinafter be referred to as ocular refractive power. Note that the ophthalmic information processing device 1 is not limited to an ophthalmic device. The ophthalmic information processing device 1 may be a personal computer (hereinafter referred to as a "PC") or a mobile terminal that can acquire and process ophthalmic information from an external ophthalmic device, an external storage device such as a server that stores electronic medical records and ophthalmic information, and the like. The ophthalmological information-processing device 1 may acquire the ophthalmological information by having a user of the ophthalmological information-processing device 1 manually input the ophthalmological information to the ophthalmological information-processing device 1 via an operation unit 12, which will be described later.

[0024] The electrical configuration of the ophthalmologic information-processing device 1 will be described with reference to Fig. 1. The ophthalmologic information-processing device 1 includes a control unit 10, and a storage unit 11, an operation unit 12, a display unit 13, a printing unit 15, a driving unit 16, and an external device connection unit 18, which are electrically connected to the control unit 10. The control unit 10 includes a CPU that controls the entire ophthalmologic information-processing device 1. The control unit 10 includes predetermined electric circuits and the like that transmit driving signals (e.g., driving currents) to the display unit 13, the printing unit 15, and the driving unit 16 in response to instructions from the CPU.

[0025] The storage unit 11 includes a ROM, a RAM, a flash memory, and the like that store various parameters and the like required when the control unit 10 executes various programs. The storage unit 11 stores a program that causes the control unit 10 to execute ophthalmologic information processing, which will be described later with reference to FIG. 5. The control unit 10 functions as an example of a processor that executes a print execution process by expanding the program stored in the storage unit 11. The program for executing the ophthalmologic information processing may be downloaded, for example, from a server connected to a network (not shown) via an external device connection unit 18, which will be described later, i.e., transmitted as a transmission signal, and stored in the storage unit 11. In this case, the program for executing the ophthalmologic information processing may be stored in a non-transitory storage medium, such as a hard disk drive (HDD), provided in the server.

[0026] The operation unit 12 includes buttons or the like operated by a user to input various instructions to the ophthalmologic information-processing device 1. When the ophthalmologic information-processing device 1 is a PC, the operation unit 12 may be an operation device such as a keyboard, a mouse, or a touch panel. The display unit 13 is a device capable of displaying various images, such as a monitor or a projector. The printing unit 15 is a print head that prints images. The printing unit 15 may be any print head, such as a thermal print head, an inkjet head, or an LED print head. The driving unit 16 includes various components necessary for the ophthalmologic information-processing device 1 to photograph, examine, and measure the subject's eye. The external device connection unit 18 is an input / output interface for electrically connecting to an external information device such as another ophthalmologic device or a PC. The external device connection unit 18 may be configured to allow wireless connection to an external information device.

[0027] The measurement value history data 20 will be described with reference to FIG. 2. In the first embodiment, the measurement value history data 20 is stored in the memory unit 11. The measurement value history data 20 is a database that stores multiple pieces of ophthalmologic information acquired by the ophthalmologic information processing device 1. "Examination date and time" indicates the date and time when the ophthalmologic information of the subject's eye was acquired. "ID" is information that identifies the subject. "R / L" indicates whether the subject's eye is the right or left eye of the subject. When the R / L value is "R", it indicates the right eye, and when it is "L", it indicates the left eye. "AL" and "REF." are ophthalmologic information of the subject's eye. AL indicates the value of the axial length of the subject's eye. The unit of AL is "mm". REF. indicates the ocular refractive power of the subject's eye. The unit of REF. is "D (diopter)".

[0028] The measurement value history data 20 stores each value of the ophthalmological information acquired by the ophthalmological information processing device 1 in association with the examination date and time, ID, and R / L. Note that the measurement value history data 20 may store various values ​​manually input to the ophthalmological information processing device 1 by a user of the ophthalmological information processing device 1 by operating the operation unit 12, in addition to the values ​​of the ophthalmological information acquired by the ophthalmological information processing device 1.

[0029] The treatment history data 30 will be described with reference to FIG. 3. In the first embodiment, the treatment history data 30 is stored in the storage unit 11. The treatment history data 30 is a database that stores the history of treatments performed on the subject's eye. The "ID" and "R / L" in the treatment history data 30 are the same as those in the measurement value history data 20 shown in FIG. 2. The treatment history data 30 stores information about treatments performed on the subject's eye for each of the subject's right eye and left eye corresponding to the ID, in association with the date and time the treatment was performed. The treatment history data 30 is provided for each ID. The treatment history data 30 stores multiple pieces of information about treatments performed on the subject's eye according to the ID. The treatment history data 30 shown in FIG. 3 is an example of treatment history data 30 corresponding to the IDs "A101" and "G034".

[0030] Treatments for the subject's eye include medical procedures such as prescribing eyeglasses, prescribing contact lenses, administering medications and supplements, and performing surgery. Medications include not only eye drops but also oral medications and injectable medications. In the treatment history data 30, "treatment details" indicates the details of treatments for the subject's eye. In the first embodiment, the treatment details are "eye drops," "eyeglasses," "contact lenses," or "surgery." "Eye drops" indicates the administration of a specific eye drop. Multiple "eye drops" columns may be provided depending on the type of eye drop, etc. "Eyeglasses" indicates a prescription for eyeglasses. "Contact lenses" indicates a prescription for contact lenses. "Surgery" indicates the performance of a specific surgery. Multiple "surgery" columns may be provided depending on the type of surgery. The treatment history data 30 may be configured to indicate other treatment details, such as the administration of oral medication.

[0031] The "Treatment Date" column indicates the date on which the treatment corresponding to the "Treatment Content" was performed. Information showing details of the treatment content corresponding to the treatment date is hereinafter referred to as "treatment information." Treatment information indicating "Administration Start" and "Administration End" indicates that the administration of eye drops has started and ended. Treatment information indicating "→" indicates that the treatment corresponding to the treatment content is continuing. Treatment information indicating "Prescription" indicates that a prescription corresponding to the treatment content has been issued. Treatment information indicating "-" indicates that the treatment corresponding to the treatment content has not been issued. Although not shown in Figure 3, if a specified surgery has been performed on the subject's eye, the treatment information indicates that the specified surgery has been performed. In other words, the treatment information indicates the content of the treatment for the subject's eye and the time when the treatment for the subject's eye was performed. Note that for treatment information corresponding to "glasses" and "contact lenses," the contents of a prescription once issued are treated as continuing until the next prescription.

[0032] The treatment history data 30 may be stored in the storage unit 11 by being imported from an external information device via the external device connection unit 18. Alternatively, the treatment history data 30 may store values ​​manually input to the ophthalmologic information-processing device 1 by a user of the ophthalmologic information-processing device 1 operating the operation unit 12.

[0033] The myopia-related data 40 will be described with reference to FIG. 4. In the first embodiment, the myopia-related data 40 is stored in the storage unit 11. The myopia-related data 40 is provided for each ID. The myopia-related data 40 shown in FIG. 4 is an example of the myopia-related data 40 corresponding to the IDs "G034" and "C425." The myopia-related data 40 is a database that stores myopia-related information. The myopia-related information is information about a subject, including information that may affect myopia and information indicating the level of influence on myopia. In the first embodiment, the myopia-related information is broadly divided into three types: "genetic factor information," "environmental factor information," and "myopic risk level." The genetic factor information indicates the subject's genetic factors related to myopia. The environmental factor information indicates the subject's environmental factors related to myopia. It is believed that genetic factors and environmental factors are involved in a complex manner in myopia. Therefore, it is preferable that the myopia-related information include genetic factor information and environmental factor information. However, only one of the genetic factor information and the environmental factor information may be used as the myopia-related information.

[0034] The genetic factor information includes information on the "myopia status of the parents" and information on "other genetic risks." The "myopia status of the parents" refers to whether one or both of the subject's parents are myopic. The user can obtain the myopia status of the parents by, for example, interviewing the subject. By manually inputting the information obtained by the user into the ophthalmologic information processing device 1, information indicating the "myopia status of the parents" is stored in the myopia-related data 40. Instead of the "myopia status of the parents," the genetic factor information may also include the myopia status of the subject's siblings or other close relatives.

[0035] The "other genetic risk" indicates the subject's genetic likelihood of developing myopia, determined by analyzing various genes involved in the onset and progression of myopia. The "other genetic risk" is derived using known methods, such as the results of a blood test on the subject. In the first embodiment, the "other genetic risk" is indicated as one of three levels: "low," "medium," or "high." A user manually inputs information indicating the "other genetic risk" derived using known methods into the ophthalmologic information processing device 1, whereby the information indicating the "other genetic risk" is stored in the myopia-related data 40. The subject's "parental myopia status" and "other genetic risk" may be registered in the subject's electronic medical record stored in an external information device. In this case, the "parental myopia status" and "other genetic risk" may be stored in the myopia-related data 40 by importing information from the electronic medical record from the external information device via the external device connection unit 18. The "other genetic risk" may be derived using various methods developed in the future.

[0036] In the first embodiment, the environmental factor information is defined as a "first time" during which the subject performed an activity that affects the progression of myopia, and a "second time" during which the subject performed an activity that affects the suppression of myopia. The first time is the time the subject spent with near vision, looking at close objects. The first time corresponds to time spent engaged in daily activities such as studying, reading, and watching television, computer, or game console screens. The second time is the time the subject spent with far vision, looking at far objects. The second time corresponds to time spent engaged in daily activities such as playing sports, commuting to work or school, etc. It is believed that the longer the first time, the more likely myopia will progress. It is believed that the longer the second time, the more likely myopia will be suppressed.

[0037] The "environmental factors" may change with changes in the subject's daily activities. The user can obtain the first and second times by, for example, interviewing the subject. The myopia-related data 40 is configured to store the first and second times in association with the time at which the information was obtained from the subject. In the first embodiment, the user interviews the subject about the first and second times each time an examination is performed using the ophthalmologic information processing device 1. The first and second times obtained from the subject are input by the user to the ophthalmologic information processing device 1 via the operation unit 12, and the first and second times are stored in the myopia-related data 40. If, for example, the user forgets to interview the subject during an examination using the ophthalmologic information processing device 1, the first and second times are left blank. Note that the first and second times may be registered in the subject's electronic medical record stored in an external information device. In this case, the first and second times may be stored in the myopia-related data 40 by importing electronic medical record information from the external information device via the external device connection unit 18. In the first embodiment, both the first time and the second time are input to the ophthalmologic information-processing device 1 and stored in the myopia-related data 40. Alternatively, at least one of the first time and the second time may be input to the ophthalmologic information-processing device 1 and stored in the myopia-related data 40.

[0038] Recent research has shown that exposure to light with a predetermined brightness or higher for a predetermined period of time or longer may inhibit the onset of myopia. It has also been found that "violet light," a visible light with a wavelength of 360 to 400 nm contained in sunlight, may inhibit the progression of myopia. By engaging in outdoor activities, people can be exposed to light with a predetermined brightness or higher and violet light contained in sunlight. Therefore, the "second period" may be the period during which outdoor activities were performed.

[0039] The myopia risk level indicates the level of likelihood that the subject's myopia will progress, as determined by the user. In the first embodiment, the myopia risk level is indicated by four levels: VH (Very High), H (High), M (Middle), and L (Low). A user such as a doctor can determine the myopia risk level by comprehensively taking into account the subject's genetic factors, environmental factors, and the like. The myopia risk level may be determined using information such as whether the subject applied eye drops correctly at the prescribed dose and frequency or whether the subject correctly wore the prescribed contact lenses. In the first embodiment, the myopia risk level is determined each time the user performs an examination using the ophthalmologic information processing device 1. The determined myopia risk level is manually input by the user into the ophthalmologic information processing device 1, and the myopia risk level is stored in the myopia-related data 40. Note that the myopia risk level may be registered in the subject's electronic medical record stored in an external information device. In this case, the myopia risk level may be stored in the myopia-related data 40 by importing information from the electronic medical record from the external information device via the external device connection unit 18.

[0040] Note that the measurement value history data 20, treatment history data 30, and myopia-related data 40 are not limited to being stored in the memory unit 11. The measurement value history data 20, treatment history data 30, and myopia-related data 40 may also be stored in a memory unit, server, or the like of an external information device that can be connected to the ophthalmologic information processing device 1 via the external device connection unit 18. The server may be an on-premise server of the provider of the ophthalmologic information processing device 1, or may be another server such as a so-called cloud server. In this case, the control unit 10 of the ophthalmologic information processing device 1 may refer to the measurement value history data 20, treatment history data 30, and myopia-related data 40 via the external device connection unit 18 and execute ophthalmologic information processing, which will be described later.

[0041] An example of ophthalmologic information processing in the first embodiment will be described with reference to FIG. 5 . The ophthalmologic information processing is executed when an instruction to examine the subject's eye is detected by the control unit 10. In the first embodiment, the instruction to examine the subject's eye is input to the ophthalmologic information processing device 1 by a user via the operation unit 12. In the following description, each processing step is abbreviated as "S." The steps of the ophthalmologic information processing of the ophthalmologic information processing device 1 are not limited to being executed by the CPU of the control unit 10 of the ophthalmologic information processing device 1, but may be executed in part or in whole by another electronic device (e.g., an ASIC, etc.) or the CPU of an external information device such as a PC. The steps of the ophthalmologic information processing may be distributed and processed by multiple electronic devices (e.g., multiple CPUs). The order of the steps of the ophthalmologic information processing may be changed, and steps may be omitted or added as necessary. A mode in which an operating system (OS) running on the ophthalmologic information processing device 1 performs a part or all of the ophthalmologic information processing based on an instruction from the control unit 10 is also included in the scope of the present disclosure.

[0042] When the ophthalmologic information processing starts, the control unit 10 acquires the current date and time as the examination date and time (S1). The control unit 10 stores the acquired examination date and time in the measurement value history data 20. The control unit 10 acquires an ID (S2). The ID may be acquired by acquiring something input by a user to the ophthalmologic information processing device 1 via the operation unit 12. The ophthalmologic information processing device 1 may be equipped with an information reading unit such as a card reader, and the ID may be acquired by having the information reading unit read information indicating the ID embedded in a card such as a medical institution's patient card. The control unit 10 associates the acquired ID with the examination date and time acquired in the processing of S1 and stores it in the measurement value history data 20. The control unit 10 acquires the R / L value (S3). The R / L value may be acquired by acquiring something input by a user to the ophthalmologic information processing device 1 via the operation unit 12. The R / L value may be acquired by the control unit 10 automatically determining it based on the position of the subject's eye relative to the ophthalmologic information processing device 1, etc. The control unit 10 associates the value of R / L with the ID acquired in the process of S2 and stores it in the measurement value history data 20. The eye to be examined is identified by the processes of S2 and S3.

[0043] The control unit 10 acquires AL and REF as ophthalmic information of the subject's eye (S5). The control unit 10 measures AL and REF of the subject's eye by driving the drive unit 16, and acquires the measured values. The control unit 10 may acquire part or all of the ophthalmic information from another external information device connected to the ophthalmic information processing device 1 via the external device connection unit 18. For example, of the ophthalmic information, AL may be acquired from a first ophthalmic device, and REF may be acquired from a second ophthalmic device. As described above, the control unit 10 may perform the process of S5 by acquiring ophthalmic information that the user has manually input into the ophthalmic information processing device 1 via the operation unit 12 after viewing the ophthalmic information written in the subject's medical record, etc.

[0044] The control unit 10 acquires past ophthalmologic information corresponding to the same eye as the eye identified in the processes of S2 and S3 by extracting it from the measurement value history data 20 (S6). The control unit 10 generates drawing data for drawing a chart in which each value of the ophthalmologic information acquired in the processes of S5 and S6 is displayed in chronological order according to the examination time (S11). In the first embodiment, the drawing data generated in the process of S11 is referred to as "initial drawing data." The control unit 10 stores the generated initial drawing data in the memory unit 11. The control unit 10 outputs the initial drawing data (S12). In the first embodiment, the drawing data generated in the ophthalmologic information processing, including the initial drawing data, is output by displaying it on the display unit 13.

[0045] 7, an example will be described in which a diagram 50 corresponding to the initial drawing data generated in the process of S11 is displayed on the display unit 13 of the ophthalmologic information-processing device 1 in the process of S12. Diagram 50 shows an example of a diagram in which the left eye of a subject with an ID of "G034" is the subject eye. Diagram 50 has a time axis 51 as the horizontal axis. Time axis 51 indicates the passage of time on a predetermined scale.

[0046] The chart 50 has two vertical axes, an AL axis 521 and a REF. axis 522, which are orthogonal to a single time axis 51. The AL axis 521 is a vertical axis that indicates the value of AL. The REF. axis 522 is a vertical axis that indicates the value of REF.

[0047] Chart 50 includes an AL graph 56 and a REF. graph 57. AL graph 56 is a graph in which AL values ​​correspond to the scale of AL axis 521, and examination dates and times correspond to the scale of time axis 51, and are arranged in chronological order. In AL graph 56, the marker that arranges AL values ​​according to examination dates and times is "■". REF. graph 57 is a graph in which REF. values ​​correspond to REF. axis 522, and are arranged in chronological order according to examination dates and times. In REF. graph 57, the marker that arranges REF. values ​​according to examination dates and times is "●". In addition, chart 50 includes an ID column 551, a left / right column 552, a latest value column 553, etc. The ID column 551 is a column for displaying ID, etc. in chart 50. The left / right column 552 is a column for displaying in chart 50 whether the eye to be examined is the right eye or the left eye. The latest value column 553 is a column for displaying the type of marker for each of the AL graph 56 and the REF. graph 57 and the latest value of the ophthalmological information on the chart 50.

[0048] In the Gullstrand eye model, a model eye modeled on the optical constants of the human eye, the change in ocular refractive power was calculated to be 2.57D when the axial length was changed by 1mm. The SRK formula, one of the calculations for determining IOL power, defines that a 1mm change in axial length results in a 2.5D change in IOL power. Various studies have revealed that the change in ocular refractive power when the axial length is changed by a unit amount can be influenced by factors such as race and age. Therefore, considering the average characteristics of the eye and assuming a change in axial length due to axial myopia, it is preferable that the change in the REF. axis 522 scale when the AL axis 521 scale is changed by 1mm corresponds to a value within the range of 1D to 3D. It is more preferable that the change in the REF. axis 522 scale when the AL axis 521 scale is changed by 1mm corresponds to a value within the range of 2D to 3D. Based on these, in the first embodiment, when the amount of change in the scale of the AL axis 521 is 1 mm, the amount of change in the scale of the REF. axis 522 is set to coincide with 2.5D.

[0049] By referring to the AL graph 56 and the REF. graph 57 in the chart 50, the user can determine the progression of axial myopia in the subject's eye. Chart 50 shows an example in which the type of myopia in the subject's eye is likely to be axial myopia. The scale of the AL axis 521 and the scale of the REF. axis 522 correspond to each other as described above. Therefore, when the type of myopia in the subject's eye is axial myopia and the AL value of the subject's eye changes in the longer direction, the slope of the AL graph 56 and the slope of the REF. graph 57 tend to be parallel. Therefore, chart 50 makes it easy for the user to predict the change in the REF. value in response to the change in the AL value. On the other hand, when the type of myopia in the subject's eye is not axial myopia but is another type, the slope of the AL graph 56 and the slope of the REF. graph 57 are unlikely to be parallel. Therefore, by browsing the charts provided by the ophthalmologic information processing device 1, the user can easily determine whether the type of myopia in the subject's eye is axial myopia. Therefore, the user can determine the type of myopia of the subject's eye and the degree of progression of myopia from multiple angles. Therefore, the ophthalmologic information-processing device 1, which provides the chart 50 to the user, can improve the efficiency of the user's diagnosis regarding myopia.

[0050] When generating the initial drawing data in the process of S11, the control unit 10 places the oldest examination date and time associated with each piece of past ophthalmologic information acquired in the process of S6 at the left end of the time axis 51, and places the current examination date and time acquired in the process of S1 at the right end of the time axis 51. In the first embodiment, the earliest examination date and time is November 30, 2018, and the latest examination date and time is October 12, 2021. In the process of S11, the control unit 10 generates the initial drawing data for displaying a chart 50 in which the chronological range of the time axis 51 extends from the earliest examination date to the latest examination date. Therefore, the chart 50 is displayed on the display unit 13 as a chart that displays ophthalmologic information from the earliest examination date to the latest examination date. Therefore, by viewing the chart 50, the user can observe the long-term trend of myopia.

[0051] Returning to the explanation of Fig. 5, the control unit 10 determines whether an instruction to change the content of the diagram or table output in the process of S12 has been input via the operation unit 12 (S13). If an instruction to change the content of the output diagram or table has not been input via the operation unit 12 (S13: NO), the control unit 10 proceeds to the determination of S18. If an instruction to change the content of the output diagram or table has been input via the operation unit 12 (S13: YES), the control unit 10 executes an output content change process (S15).

[0052] The output content change process (S15, see FIG. 5) will be described in detail with reference to FIG. 6. When the output content change process is started, the control unit 10 determines whether the instruction input in the process of S13 is range designation information that designates a time series range of the time axis 51 in the diagram (S21). If the input instruction is not range designation information (S21: NO), the control unit 10 proceeds to the determination of S23. If the input instruction is range designation information (S21: YES), the control unit 10 acquires the range designation information and generates drawing data for drawing a diagram corresponding to the time series range designated by the acquired range designation information (S22). The control unit 10 proceeds to the determination of S23.

[0053] The control unit 10 determines whether the instruction input in the process of S13 specifies that a first boundary value at which the subject's eye is determined to be myopic and a second boundary value at which the subject's eye is determined to be myopic, i.e., a so-called severe myopia, be displayed on the chart (S23). In the first embodiment, the first boundary value and the second boundary value are set corresponding to the REF. axis 522. The first boundary value is "-0.5D." The second boundary value is "-6D." The first boundary value and the second boundary value are merely examples, and may be values ​​other than "-0.5D" and "-6D." If the input instruction does not specify that the first boundary value and the second boundary value be displayed on the chart (S23: NO), the control unit 10 proceeds to the determination of S26. If the input instruction specifies that the first boundary value and the second boundary value be displayed on the chart (S23: YES), the control unit 10 generates drawing data for drawing a chart in which the first boundary value and the second boundary value are displayed (S25). The control unit 10 proceeds to the determination in S26.

[0054] The control unit 10 determines whether the instruction input in the process of S13 is an instruction to reflect the treatment information in the chart (S26). If the input instruction is not an instruction to reflect the treatment information in the chart (S26: NO), the control unit 10 proceeds to the process of S31. If the instruction is an instruction to reflect the treatment information in the chart (S26: YES), the control unit 10 identifies the treatment history data 30 corresponding to the ID acquired in the process of S2 from among the treatment history data 30 stored in the storage unit 11. The control unit 10 acquires the treatment information of the subject's eye from the identified treatment history data 30 (S28). In the first embodiment, the instruction to reflect the treatment information in the chart is selectively input for each treatment content. In the process of S28, the control unit 10 acquires the treatment information corresponding to the treatment content indicated by the instruction input via the operation unit 12 in the process of S13 from the treatment history data 30. The control unit 10 generates drawing data for drawing a chart that reflects the acquired treatment information (S29), and the control unit 10 shifts the process to the process of S31.

[0055] The control unit 10 determines whether the instruction input in the process of S13 is an instruction to display genetic factor information in a diagram (S31). If the input instruction is an instruction to display genetic factor information in a diagram (S31: YES), the control unit 10 identifies myopia-related data 40 corresponding to the ID acquired in the process of S2 from among the multiple myopia-related data 40 stored in the storage unit 11. The control unit 10 acquires genetic factor information of the subject from the identified myopia-related data 40 (S32). The control unit 10 generates drawing data for drawing a diagram displaying the acquired genetic factor information (S33).

[0056] On the other hand, if the instruction input in the process of S13 is not an instruction to display genetic factor information in a chart (S31: NO), the control unit 10 determines whether the input instruction is an instruction to display environmental factor information in a chart (S35). If the input instruction is an instruction to display environmental factor information in a chart (S35: YES), the control unit 10 identifies myopia-related data 40 corresponding to the ID acquired in the process of S2 from among the multiple myopia-related data 40 stored in the memory unit 11. The control unit 10 acquires environmental factor information of the subject, i.e., the first time and the second time, from the identified myopia-related data 40 (S36). The control unit 10 generates drawing data for drawing a chart that reflects the acquired first time and second time in chronological order (S38).

[0057] On the other hand, if the instruction input in the process of S13 is not an instruction to display environmental factor information on a chart (S35: NO), the control unit 10 determines whether the input instruction is an instruction to display the myopia risk level on a chart (S41). If the input instruction is an instruction to display the myopia risk level on a chart (S41: YES), the control unit 10 identifies the myopia-related data 40 corresponding to the ID acquired in the process of S2 from among the multiple myopia-related data 40 stored in the storage unit 11. The control unit 10 acquires the myopia risk level of the subject from the identified myopia-related data 40 (S42). The control unit 10 generates drawing data for drawing a chart that reflects the acquired myopia risk levels in chronological order (S43).

[0058] The myopia risk level may be derived based on at least one of the first time and the second time. In this case, the control unit 10 acquires the myopia risk level by deriving the myopia risk level from at least one of the first time and the second time based on a predetermined derivation method in the process of S42. The method of deriving the myopia risk level using at least one of the first time and the second time may be configured in various ways. For example, the myopia risk level may be derived based on the ratio between the first time and the second time. A derivation method may be employed in which a myopia risk level equal to or less than a predetermined level is derived when the length of the first time is equal to or less than a predetermined time. A myopia risk level equal to or greater than a predetermined level is derived when the length of the second time is equal to or greater than a predetermined time.

[0059] The control unit 10 can execute the processes of S22, S25, and S29 in a superimposed manner. The control unit 10 can also selectively execute the processes of S32, S38, and S43. Each of the processes of S32, S38, and S43 can be executed in a superimposed manner with the processes of S22, S25, and S29. The control unit 10 returns the process to ophthalmologic information processing.

[0060] Returning to the description of FIG. 5, the control unit 10 outputs the drawing data generated in the output content change processing (S16). In the first embodiment, the drawing data generated in the ophthalmologic information processing, including the initial drawing data, is output by displaying it on the display unit 13. The control unit 10 determines whether an instruction to end the ophthalmologic information processing has been input via the operation unit 12 (S18). If an instruction to end the ophthalmologic information processing has not been input via the operation unit 12 (S18: NO), the control unit 10 returns the process to S12 and continues the subsequent processes. If an instruction to end the ophthalmologic information processing has been input via the operation unit 12 (S18: YES), the control unit 10 ends the ophthalmologic information processing.

[0061] Referring to FIG. 8, an example will be described in which a chart 60 corresponding to the drawing data generated in the processes of S22 and S33 is displayed on the display unit 13 of the ophthalmologic information processing device 1 in the process of S16. Assume that in S21, it is determined that an instruction has been given to set the time series range of the time axis 51 from January 6, 2021 to October 12, 2021. In this case, the control unit 10 generates drawing data by placing January 6, 2021 at the left end of the time axis 51 and October 12, 2021 at the right end. The control unit 10 also generates drawing data that includes a genetic factor information field 61 for displaying genetic factor information. The genetic factor information field 61 displays the subject's "parental myopia status" and "other genetic risks."

[0062] In this case, the user can view the chart 60, which arbitrarily divides the time series range, and can therefore pay more attention to the AL graph 56 and the REF. graph 57 over the divided period. Furthermore, the user viewing the chart 60 can see the genetic factor information of the subject at a glance, along with the ophthalmological information shown in the AL graph 56 and the REF. graph 57. Therefore, the ophthalmological information processing device 1 can allow the user to grasp the myopia condition and genetic factor information of the subject at a time, thereby improving the efficiency of myopia diagnosis.

[0063] 9, an example will be described in which a diagram 70 corresponding to the drawing data generated in the processes of S25 and S38 is displayed on the display unit 13 of the ophthalmologic information-processing device 1 in the process of S16. In this case, the control unit 10 generates drawing data having a first boundary axis 71 and a second boundary axis 72. As shown in the diagram 70, the first boundary axis 71 is a horizontal axis perpendicular to the REF. axis 522 at a position where the REF. axis 522 indicates the first boundary value of −0.5D. The word “myopia” is added to the left of the first boundary axis 71 to indicate that the line indicated by the first boundary axis 71 is the boundary between myopia and non-myopia. The second boundary axis 72 is a horizontal axis perpendicular to the REF. axis 522 at a position where the REF. axis 522 indicates the second boundary value of −6D. The word “high myopia” is added to the left of the second boundary axis 72 to indicate that the line indicated by the second boundary axis 72 is the boundary between severe myopia and non-severe myopia.

[0064] A user viewing the chart 70 can easily grasp the degree of myopia of the subject's eye by comparing the first boundary axis 71 and the second boundary axis 72 with the REF. graph 57. The first boundary value may be defined as "25 mm," the second boundary value may be defined as "27 mm," and so on, using AL values. That is, the first boundary axis 71 and the second boundary axis 72 may be set corresponding to the AL axis 521. In this case, the user can easily grasp the degree of myopia of the subject's eye by comparing the first boundary axis 71 and the second boundary axis 72 with the AL graph 56.

[0065] Furthermore, the control unit 10 generates drawing data including a time display section 73 indicating a first time and a second time corresponding to the time indicated by the time axis 51, as shown in diagram 70. The time display section 73 is a bar graph having a reference axis 74, which is a horizontal axis extending parallel to the time axis 51, as a reference, and including a first time section 731 extending downward from the reference axis 74 and indicating the first time, and a second time section 732 extending upward from the reference axis 74 and indicating the second time. The embodiment of the time display section 73 is an example. The first time section 731 may be configured to extend upward from the reference axis 74, and the second time section 732 may be configured to extend downward from the reference axis 74. The time display section 73 is not limited to a bar graph and may be a pie chart, etc. The time display section 73 may be configured to indicate the first time and the second time using numerical values, the number of icons, etc., in addition to representing the first time and the second time in a graph. Furthermore, the time display section 73 may be configured to have only either the first time section 731 or the second time section 732.

[0066] A user viewing the chart 70 can consider the influence of environmental factors on the degree of myopia of the subject by comparing the progression of the AL graph 56 and the REF. graph 57 with the changes in the first and second times indicated by the time display unit 73. Changes in the subject's daily activities are likely to affect changes in the first and second times. For example, if the chart 70 shows a tendency for the progression of myopia to be suppressed as the second time increases, the user can advise the subject to secure the second time in their daily life.

[0067] In addition to the first and second times as environmental factor information, the myopia-related data 40 may also store information indicating changes in daily activities that may affect the changes between the first and second times, in association with the time period when the changes occurred. Examples of information indicating changes in daily activities that may affect the changes between the first and second times include acquiring a device that requires near vision, such as a computer, smartphone, or game console; developing a sports habit through club activities; or changing a commute route. In the process of S38, the control unit 10 may generate drawing data corresponding to a chart that displays information indicating changes in daily activities that may affect the changes between the first and second times in association with the time period when the changes occurred. In this case, the ophthalmologic information processing device 1 allows the user to visually view information indicating changes in daily activities that may affect the changes between the first and second times on the chart. This makes it easier for the user to understand the reasons for the changes between the first and second times.

[0068] Referring to FIG. 10 , an example will be described in which a chart 80 corresponding to the drawing data generated in the processes of S29 and S43 is displayed on the display unit 13 of the ophthalmologic information processing device 1 in the process of S16. In this case, the control unit 10 generates drawing data having treatment information axes 82 and 83. The treatment information axes 82 and 83 are horizontal axes for reflecting treatment information in chronological order in the chart. As shown in the chart 80, the treatment information axis 82 reflects, in chronological order, the implementation status of the treatment content of "eye drops" among the information regarding the treatment for the subject's eye corresponding to the ID "G034" in the treatment history data 30. The word "eye drops" is written on the left side of the treatment information axis 82, indicating the treatment content corresponding to the treatment information axis 82. The treatment information axis 83 reflects, in chronological order, the implementation status of the treatment content of "contact lenses" among the information regarding the treatment for the subject's eye corresponding to the ID "G034" in the treatment history data 30. The word "contact lenses" is written on the left side of the treatment information axis 83, indicating the treatment content corresponding to the treatment information axis 83. The left ends of the treatment information axes 82 and 83 are positioned at the start times of the treatment contents corresponding to the treatment information axes 82 and 83, respectively, relative to the time axis 51. The right ends of the treatment information axes 82 and 83 are positioned at the end times of the treatment contents corresponding to the treatment information axes 82 and 83, respectively, relative to the time axis 51. In the chart 80, the treatment contents corresponding to the treatment information axes 82 and 83, respectively, are still ongoing, so the right ends of the treatment information axes 82 and 83 are positioned at the right edge of the chart 80.

[0069] A user viewing the chart 80 can grasp the treatment information of the subject's eye along with the time when the treatment was performed, based on the treatment information axes 82 and 83. Therefore, the user can consider the myopia condition of the subject's eye based on the treatment content and the time when the treatment was performed on the subject's eye.

[0070] Furthermore, the control unit 10 generates drawing data including a myopia risk level display 81 that indicates the myopia risk level corresponding to the period indicated by the time axis 51. The myopia risk level display 81 is a graph that reflects the myopia risk level corresponding to the ID "G034" in the myopia-related data 40 in a chronological order. As shown in chart 80, the myopia risk level display 81 arranges four levels, L, M, H, and VH, in order from bottom to top on the vertical axis, and indicates the myopia risk level corresponding to the period indicated by the time axis 51.

[0071] A user viewing the chart 80 can ascertain the "myopic risk level" of the subject's eye in accordance with the time period based on the myopia risk level display 81. Therefore, the user can consider the myopia condition of the subject's eye in accordance with the myopia risk level of the subject's eye. In the first embodiment, the myopia risk level display 81 may not only show the myopia risk level in a graph, but may also show the myopia risk level using numerical values, the number of icons, or the like.

[0072] A second embodiment, which is one of typical embodiments according to the present disclosure, will be described with reference to Fig. 11 to Fig. 16. An ophthalmologic information processing device 1 of the second embodiment stores measurement value history data 21 shown in Fig. 11 in a storage unit 11, instead of the measurement value history data 20 of the first embodiment shown in Fig. 2. Furthermore, a control unit 10 of the ophthalmologic information processing device 1 of the second embodiment executes ophthalmologic information processing shown in Fig. 12, instead of the ophthalmologic information processing of the first embodiment shown in Fig. 5.

[0073] The ophthalmologic information processing device 1 according to the second embodiment is an optical interference type axial length measurement device capable of acquiring corneal refractive power in addition to axial length and ocular refractive power as ophthalmologic information. The ophthalmologic information processing device 1 may be a PC capable of acquiring and processing corneal refractive power from an external ophthalmologic device, an external storage device such as a server that stores electronic medical records and ophthalmologic information, etc. The corneal refractive power may be acquired by the ophthalmologic information processing device 1 when a user of the ophthalmologic information processing device 1 manually inputs the corneal refractive power to the ophthalmologic information processing device 1 via an operation unit 12 (described later). The other configurations of the ophthalmologic information processing device 1 according to the second embodiment are the same as those of the first embodiment. Descriptions of the same configurations of the second embodiment as those of the first embodiment will be omitted as appropriate.

[0074] The measurement value history data 21 will be described with reference to FIG. 11 . Similar to the measurement value history data 20 of the first embodiment, the measurement value history data 21 is a database that stores multiple pieces of ophthalmologic information acquired by the ophthalmologic information processing device 1. "Steep K," "Flat K," "KM," and "KKI" are ophthalmologic information of the subject's eye. Steep K, Flat K, KM, and KKI are values ​​related to corneal refractive power. Among these, Steep K, Flat K, and KM are values ​​indicating the radius of curvature of the cornea. Steep K indicates the value of the radius of curvature of the cornea at the principal meridian of the subject's eye. Flat K indicates the value of the radius of curvature of the cornea at the principal meridian of the subject's eye. KM indicates the average value of Steep K and Flat K. The units of Steep K, Flat K, and KM are "mm." In the second embodiment, the ophthalmologic information processing device 1 measures Steep K and Flat K, and acquires the value of KM by calculating the average value of Steep K and Flat K. The value of the corneal refractive power may be calculated by dividing a predetermined constant by the value of the radius of curvature of the cornea. In the first embodiment, Steep K, Flat K, and KM are treated as values ​​indicating the corneal refractive power. On the other hand, the value of the corneal refractive power calculated from the values ​​of Steep K, Flat K, and KM may also be used as the value indicating the corneal refractive power.

[0075] KKI is a value indicating the probability of keratoconus and is calculated based on corneal refractive power. KKI is also called the "keratoconus screening index." KKI is calculated from the Steep K and Flat K values ​​using a regression equation shown in Japanese Patent No. 6707239, etc. A KKI value exceeding a predetermined cutoff value corresponds to an increased risk of keratoconus in the examined eye. In the first embodiment, the cutoff value is "0.461." The measurement value history data 21 stores each of the values ​​acquired and calculated by the ophthalmologic information processing device 1 in association with the examination date and time, ID, and R / L.

[0076] The ophthalmological information processing of the second embodiment will be described with reference to Fig. 12. The ophthalmological information processing shown in Fig. 12 includes processes similar to those in the ophthalmological information processing shown in Fig. 5. In the ophthalmological information processing shown in Fig. 12, the processes similar to those in the ophthalmological information processing shown in Fig. 5 are assigned the same step numbers as those in the ophthalmological information processing shown in Fig. 5, and descriptions thereof will be omitted as appropriate.

[0077] As shown in FIG. 12, when the ophthalmologic information processing starts, the control unit 10 sequentially executes the processes from S1 to S3. The control unit 10 acquires AL, REF, Steep K, and Flat K as ophthalmologic information of the subject's eye (S51). The control unit 10 measures AL, REF, Steep K, and Flat K of the subject's eye by driving the drive unit 16, and acquires measurement values. The control unit 10 calculates the value of KM based on the acquired values ​​of Steep K and Flat K (S52). The control unit 10 stores the calculated value of KM in the measurement value history data 21. The control unit 10 calculates the value of KK I based on the acquired values ​​of Steep K and Flat K and the aforementioned regression equation (S53). The control unit 10 associates the ophthalmologic information acquired in S51, S52, and S53 with the value of R / L acquired in the process of S3 and stores them in the measurement value history data 21.

[0078] The control unit 10 may acquire part or all of the ophthalmological information from another external information device or the like connected to the ophthalmological information processing device 1 via the external device connection unit 18. For example, among the ophthalmological information, AL and REF may be acquired from a first ophthalmological device, and Steep K and Flat K may be acquired from a second ophthalmological device. Acquisition of the KM and KKI values ​​is not limited to calculation by the control unit 10. For example, instead of the processes of S52 and S53, the control unit 10 may perform a process of acquiring, via the external device connection unit 18, the KM and KKI values ​​acquired in another external information device or the like connected to the ophthalmological information processing device 1.

[0079] The control unit 10 executes the processes of S6, S11, S12, and S13. If the determination in S13 is "NO," the control unit 10 determines whether the instruction input in the process of S13 is selection information indicating which ophthalmologic information value to display in the chart (S61). In the second embodiment, the selection information corresponds to information for selecting which graph to display in the chart from the AL graph 56, the REF graph 57, the KM graph 58, and the KKI graph 59. If the input instruction is not selection information (S61: NO), the control unit 10 proceeds to S15. If the input instruction is selection information (S61: YES), the control unit 10 acquires the selection information and generates drawing data for drawing a chart displaying the ophthalmologic information value according to the acquired selection information (S62). The control unit 10 proceeds to S15. Thereafter, the control unit 10 executes the processes of S15, S16, and S18.

[0080] 13, an example will be described in which a diagram 90 corresponding to the initial drawing data generated in the process of S11 of the ophthalmologic information processing of the second embodiment is displayed on the display unit 13 of the ophthalmologic information processing device 1 in the process of S12. The diagram 90 shows an example of a diagram in the case where the right eye of a subject with an ID of "A101" is the subject eye. In the process of S11, the control unit 10 generates the initial drawing data so that the time series range of the time axis 51 is from the earliest examination date to the latest examination date.

[0081] The graph 90 has four vertical axes, namely, an AL axis 521, a REF. axis 522, a KM axis 523, and a KKI axis 524, which are orthogonal to the time axis 51. The KM axis 523 is a vertical axis that indicates the KM value. The KKI axis 524 is a vertical axis that indicates the KKI value. The graph 90 also has a cutoff axis 53, which is a horizontal axis that is orthogonal to the KKI axis 524 at the position where the KKI axis 524 indicates the cutoff value of 0.461. In the second embodiment, the scale of the REF. axis 522 is set so that it changes 1.5D when the scale of the AL axis 521 changes by 1 mm.

[0082] Chart 90 includes KM graph 58 and KKI graph 59 in addition to AL graph 56 and REF. graph 57. KM graph 58 is a graph in which KM values ​​are arranged in chronological order according to examination date and time, with KM values ​​corresponding to the scale of KM axis 523. In KM graph 58, the markers that arrange KM values ​​according to examination time are "□". KKI graph 59 is a graph in which KKI values ​​are arranged in chronological order according to examination time and with KKI values ​​corresponding to the scale of KKI axis 524. In KKI graph 59, the markers that arrange KKI values ​​according to examination time are "◯". Latest value column 553 displays the type of marker for each of AL graph 56, REF. graph 57, KM graph 58, and KKI graph 59, as well as the value of the latest ophthalmological information, in chart 90.

[0083] The user can determine the degree of progression of refractive myopia in the subject's eye by referring to the KM graph 58 and the REF. graph 57 in the chart 90. The user can determine whether the subject's eye is suspected of having keratoconus by referring to the KKI graph 59 and the REF. graph 57 in the chart 90. Since the chart 90 has a cutoff axis 53, the user can easily determine whether the subject's eye is suspected of having keratoconus by observing whether the value of the KKI graph 59 exceeds the cutoff axis 53. The chart 90 allows the user to view the AL graph 56, the REF. graph 57, the KM graph 58, and the KKI graph 59 at a glance. Therefore, the ophthalmologic information processing device 1 allows the user to determine the type of myopia in the subject's eye and the degree of progression of myopia from multiple angles.

[0084] 14, an example will be described in which a chart 100 corresponding to the drawing data generated in the processes of S22, S33, and S62 is displayed on the display unit 13 of the ophthalmologic information-processing device 1 in the process of S16. Assume that in S21, it is determined that an instruction has been given to set the time series range of the time axis 51 from December 14, 2020 to October 12, 2021. Also, assume that in S62, it is determined that an instruction has been given to not display the AL graph 56, but to display the REF. graph 57, KM graph 58, and KKI graph 59.

[0085] In this case, the control unit 10 generates the drawing data by placing December 14, 2020 at the left end of the time axis 51 and October 12, 2021 at the right end. The control unit 10 also generates the drawing data in a manner that does not display the AL graph 56, but instead displays the REF. graph 57, KM graph 58, and KKI graph 59. A user viewing the chart 100 without the AL graph 56 can pay closer attention to the REF. graph 57, KM graph 58, and KKI graph 59 and the myopia trends represented by these graphs. For example, if the user estimates that the type of myopia is not axial myopia but is due to refractive myopia or keratoconus, the user can delete the AL graph 56, which indicates the axial myopia trend, from the chart. This allows the user to pay attention to the REF. graph 57, KM graph 58, and KKI graph 59 displayed in the chart to closely examine the progression of refractive myopia or whether keratoconus is suspected in the examined eye. In addition, the user can visually view the chart 60, which arbitrarily divides the time series range, allowing the user to more closely monitor the progress of the ophthalmological information over the divided period. Furthermore, the chart 90 also has a genetic factor information column 61, allowing the user to view the genetic factor information of the subject at a glance, along with the ophthalmological information shown in the AL graph 56, REF. graph 57, KM graph 58, and KKI graph 59.

[0086] 15, an example will be described in which a diagram 110 corresponding to the drawing data generated in the process of S29 is displayed on the display unit 13 of the ophthalmologic information-processing device 1 in the process of S16. The diagram 110 is displayed when it is determined in S26 that an instruction has been given to reflect treatment information related to the administration of "eye drops" and the prescription of "contact lenses" in the diagram.

[0087] In this case, the control unit 10 generates drawing data with hatching 111 indicating the period during which the eye drops were administered and hatching 113 indicating the period during which the contact lenses were prescribed. The control unit 10 displays a chart 110 corresponding to the generated drawing data on the display unit 13. In the first embodiment, an indicator 112 is provided in the chart 110 to clearly indicate that the hatching 111 reflects treatment information related to the administration of the eye drops. An indicator 114 is also provided in the chart 110 to clearly indicate that the hatching 113 reflects treatment information related to the contact lens prescription. A user viewing the chart 110 can observe the progression of each of the AL graph 56, REF graph 57, KM graph 58, and KKI graph 59 in association with the treatment history of the subject's eye.

[0088] In the first embodiment, treatment information axes 82 and 83 are used to reflect treatment information in the chart. To reflect treatment information in the chart, a method using hatching 111 and 113 as exemplified in the second embodiment may be adopted. Furthermore, the chart displayed on the display unit 13 of the ophthalmologic information processing device 1 of the second embodiment may reflect environmental factor information and myopia risk level in chronological order. The first boundary value and the second boundary value may be displayed on the chart displayed on the display unit 13 of the ophthalmologic information processing device 1 of the second embodiment. The display manner of the environmental factor information, myopia risk level, first boundary value, and second boundary value may be variously changed from the example of the first embodiment.

[0089] In the second embodiment, drawing data is generated so that four vertical axes, namely, AL axis 521, REF. axis 522, KM axis 523, and KKI axis 524, are orthogonal to one horizontal time axis 51, and the generated drawing data is output as charts 90, 100, and 110. Alternatively, drawing data may be generated so that multiple graphs, each with a vertical axis orthogonal to one time axis 51, are displayed side by side in one chart. A specific example is shown in FIG. 16.

[0090] As shown in FIG. 16 , the chart 120 has four time axes 51, with an AL axis 521, a REF. axis 522, a KM axis 523, and a KKI axis 524 each perpendicular to the time axis 51. An AL graph 56 is displayed corresponding to the AL axis 521. A REF. graph 57 is displayed corresponding to the REF. axis 522. A KM graph 58 is displayed corresponding to the KM axis 523. A KKI graph 59 is displayed corresponding to the KKI axis 524. Even when one chart 120 is configured in this way, the user can view each graph using the chart 120, allowing the type of myopia of the subject's eye and the degree of progression of myopia to be determined from multiple angles.

[0091] In the second embodiment, the control unit 10 uses the KM and KKI values ​​as values ​​related to the corneal refractive power, and generates drawing data for a chart that displays a KM graph 58 and a KKI graph 59 in which the KM and KKI values ​​are arranged in chronological order. The control unit 10 may generate drawing data by using only either the KM value or the KKI value as a value related to the corneal refractive power. The control unit 10 may generate drawing data by using values ​​such as Steep K and Flat K in addition to or instead of the KM value as values ​​indicating the corneal refractive power.

[0092] The techniques disclosed in the first and second embodiments are merely examples. Therefore, the techniques exemplified in the first and second embodiments may be modified. For example, only part of the techniques exemplified in the first and second embodiments may be implemented. Specifically, in the first embodiment, rendering data is generated in the processes of S11, S22, S25, S29, S33, S38, and S43 in response to the acquisition of the latest ophthalmic information of the subject's eye in the process of S5. However, the process of S5 may not be executed, and the ophthalmic information of the subject's eye, including the latest information, may be acquired in the process of S6. Alternatively, the control unit 10 may acquire past ophthalmic information in the process of S6 without acquiring the latest ophthalmic information of the subject's eye in the process of S5, and generate rendering data based on the acquired past ophthalmic information.

[0093] In the first and second embodiments, the output of the drawing data in S12 and S16 is executed as display of a diagram on the display unit 13. The output of the drawing data may be executed by displaying the diagram on an external display device or the like that is connected wired or wirelessly to the ophthalmologic information-processing device 1 via the external device connection unit 18. The output of the drawing data may also be executed by printing the diagram on paper or the like by the printing unit 15 of the ophthalmologic information-processing device 1. The printed output of the diagram corresponding to the drawing data may be executed by an external printing device or the like that is connected wired or wirelessly to the ophthalmologic information-processing device 1 via the external device connection unit 18.

[0094] The range designation information acquired in the process of S21 may arbitrarily designate a time series range as in the first and second embodiments. Alternatively, the range designation information may be configured to predetermine the time series range that can be designated, such as one year from the most recent examination date, two years from the most recent examination date, or three years from the most recent examination date, and allow the user to select one of these ranges.

[0095] The scale of the REF. axis 522 in the chart may be arbitrarily set relative to the scale of the AL axis 521 without taking into account the average characteristics of the eye. Even in this case, the ophthalmologic information processing device 1 can improve the efficiency of myopia diagnosis by presenting one chart that can list multiple pieces of ophthalmologic information.

[0096] In the output content change process, the control unit 10 may execute the processes of S32, S38, and S43 in a superimposed manner. Therefore, the control unit 10 may generate drawing data in which two or more of the genetic factor information field 61 and the time display field 73 are displayed in one diagram.

[0097] The ophthalmologic information-processing device 1 may be configured so that, when generating drawing data, the user can arbitrarily set the amount of change in the scale of the REF. axis 522 that coincides with the amount of change in the scale of the AL axis 521. For example, in the ophthalmologic information processing, before the processing of S11 is performed, a process may be performed in which the user inputs the amount of change in the scale of the REF. axis 522 when the amount of change in the scale of the AL axis 521 is 1 mm, for example, as a value within a range from 2D to 3D. In this case, the ophthalmologic information-processing device 1 can adjust the amount of change in the scale of the REF. axis 522 that coincides with the amount of change in the scale of the AL axis 521 according to the subject, etc., and therefore can provide a chart that makes it easier to view the changes in the AL value and the REF. value.

[0098] In a chart, it may be desired to adjust the distance between the AL graph 56 and the REF. graph 57. Specifically, for example, in the chart 50 shown in FIG. 7 , the AL axis 521 is 27.5 mm at the position where the REF. axis 522 indicates −3D. However, the user may want to view a chart in which the distance between the AL graph 56 and the REF. graph 57 in the vertical direction is changed. To accommodate such a case, the ophthalmologic information processing device 1 may be configured to change the value of the AL axis 521 at the position where the REF. axis 522 indicates a predetermined value (e.g., −3D) in the chart. For this reason, for example, in the output content change process, a process may be performed in which the user inputs the value of the AL axis 521 at the position where the REF. axis 522 indicates a predetermined value. Because the distance between the AL graph 56 and the REF. graph 57 in the chart can be adjusted, the ophthalmologic information processing device 1 can provide a chart that makes it easier to view changes in the AL value and the REF. value.

[0099] The processes of S51, S52, S53, and S6 in the second embodiment are examples of "value acquisition processes" and "value acquisition steps." The processes of S11, S16, S19, and S23 are examples of "drawing data generation processes" and "drawing data generation steps." The process of acquiring selection information in S61 is an example of "selection information acquisition processes." The process of acquiring range designation information in S21 is an example of "range acquisition processes." The process of acquiring treatment information in S28 is an example of "treatment information acquisition processes." [Explanation of symbols]

[0100] 1. Ophthalmology information processing device 10 Control Unit 11 Storage section 13 Display section 15 Printing Department 90,100,110,120 Chart

Claims

1. An ophthalmological information processing device that processes ophthalmological information of a subject's eye, The control unit of the ophthalmologic information processing device a value acquisition process for acquiring, as the ophthalmologic information of the subject's eye, a value of the axial length, a value of the refractive power of the entire eye, and a value related to the corneal refractive power, while specifying the examination time; a drawing data generation process for generating drawing data for drawing one chart in which the values ​​corresponding to the same eye to be examined acquired in the value acquisition process are arranged in chronological order according to the examination time; An ophthalmological information processing device characterized by executing the above.

2. The value relating to the corneal refractive power includes at least either a value indicating the corneal refractive power or a value indicating the probability of keratoconus, which is calculated based on the corneal refractive power.

2. The ophthalmological information processing apparatus according to claim 1.

3. the control unit executes a selection information acquisition process to acquire selection information for selecting which of the value of the axial length, the value of the refractive power of the entire eye, and the value related to the corneal refractive power to display in the one chart; The drawing data generation process generates the drawing data corresponding to the selection information acquired by the selection information acquisition process.

3. The ophthalmologic information processing apparatus according to claim 1, wherein the ophthalmologic information processing apparatus is a computer.

4. An ophthalmological information processing program for processing ophthalmological information of a subject's eye, a value acquiring step of acquiring, as the ophthalmologic information of the subject's eye, a value of the axial length, a value of the refractive power of the entire eye, and a value related to the corneal refractive power at a specified examination time; a drawing data generating step of generating drawing data for drawing one chart in which the values ​​corresponding to the same eye to be examined acquired in the value acquiring step are arranged in chronological order according to the examination time; An ophthalmology information processing program characterized by causing a computer to execute the above.

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