Ophthalmological information processing device and ophthalmological information processing program

Abstract

Provided is an ophthalmological information processing device for processing ophthalmological information pertaining to an eye under examination, wherein a control unit of the ophthalmological information processing device executes: a value acquisition process for acquiring a plurality of eye axis length values obtained by measuring the eye under examination at different examination times; a graph generation process for generating a graph in which the plurality of eye axis length values acquired through the value acquisition process are arranged in time series according to the examination times; and an addition process for adding, to the graph, prediction data for the eye axis length value inputted through an operation performed by a user on an operation means.

Description

Ophthalmological information processing device and ophthalmological information processing program

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

[0002] Ophthalmological information processing devices that present ophthalmological information are known. In recent years, the prevalence of myopia, particularly among young people, has increased significantly, and evaluation of myopia progression based on axial length has attracted attention (see Patent Document 1). Users of ophthalmological information processing devices sometimes use axial length growth curves to explain treatment strategies to patients. Growth curves are statistical data based on measurement data of a large number of examined eyes.

[0003] Japanese Patent Application Laid-Open No. 2023-107639

[0004] The growth curve is statistical data, and depending on the eye being examined, the degree of axial length growth may deviate from the growth curve. In such cases, there is no graph that the user can use as a reference to explain the treatment plan, making it difficult to explain the treatment plan.

[0005] In order to solve the above problems, the present disclosure is characterized by having the following configuration.

[0006] (1) An ophthalmic information processing device that processes ophthalmic information of a subject's eye, wherein a control unit of the ophthalmic information processing device executes a value acquisition process to acquire multiple axial length values ​​of the subject's eye measured at different examination times, a graph generation process to generate a graph in which the multiple axial length values ​​acquired by the value acquisition process are arranged in chronological order according to the examination times, and an additional process to add predicted data of axial length values ​​input by a user operating an operation means to the graph. (2) A program used in an ophthalmic information processing device that processes ophthalmic information of a subject's eye, wherein the program is executed by a control unit of the ophthalmic information processing device to cause the ophthalmic information processing device to execute a value acquisition process step to acquire multiple axial length values ​​of the subject's eye measured at different examination times, a graph generation process step to generate a graph in which the multiple axial length values ​​of the subject's eye measured at different examination times are arranged in chronological order according to the examination times, and an additional process step to add predicted data of axial length values ​​input by a user operating an operation means to the graph.

[0007] FIG. 1 is a block diagram showing the electrical configuration of the ophthalmologic information processing device 1. FIG. 2 is an explanatory diagram of measurement value history data 20. FIG. 3 is a flowchart of ophthalmologic information processing for outputting predicted data of axial length in an embodiment. FIG. 4 is an explanatory diagram showing an example of a graph 40 corresponding to drawing data. FIG. 50 is an explanatory diagram showing an example of a graph 60 corresponding to drawing data.

[0008] <Overview of the Embodiments> The technology exemplified in the present disclosure can be applied to an ophthalmic information processing device. For example, an ophthalmic information processing device may be an ophthalmic device such as an axial length measurement device that measures the axial length of a subject's eye. Note that the ophthalmic information processing device 1 is not limited to an ophthalmic device. For example, the ophthalmic information processing device 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, or the like.

[0009] The ophthalmologic information processing device of the exemplary embodiment of the present disclosure includes a memory unit, an operation unit, a display unit, a printing unit, an examination unit, an external device connection unit, a control unit, etc. The memory unit (e.g., memory unit 2) stores a program for executing ophthalmologic information processing. The operation unit (e.g., operation unit 3) is operated by a user. The display unit (e.g., display unit 4) displays graphs generated by the control unit. The printing unit (e.g., printing unit 5) prints images. The examination unit (e.g., examination unit 6) 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 (e.g., external device connection unit 7) electrically connects to other ophthalmologic devices or external information devices such as a PC. The control unit (e.g., control unit 10) acquires multiple axial length values ​​measured at different examination times. The control unit generates a graph in which the acquired axial length values ​​are arranged in chronological order according to the examination time. The control unit executes a process of adding predicted data of axial length values ​​input by the user through operation of the operation means to the graph.

[0010] The operation unit is operated by the user when inputting predicted data for the value of the axial length, etc. The operation unit may be an operation device such as a joystick, a keyboard, a mouse, or a touch panel.

[0011] The display unit displays the graph generated by the control unit. The display unit may be an output device such as a monitor or projector that displays information such as characters and figures.

[0012] The value acquisition process may involve the control unit acquiring multiple axial length values ​​measured at different examination times in order to generate a graph showing the degree of axial length elongation in the same subject eye.

[0013] Arranging the axial length values ​​in chronological order according to the examination date means showing the axial length values ​​in chronological order according to the examination date. A graph in which the axial length values ​​are arranged in chronological order according to the examination date is, for example, a graph in which the axial length values ​​are shown with markers in order from the oldest examination date to the newest examination date on a graph with the axial length values ​​on the vertical axis and the time axis on the horizontal axis.

[0014] The predicted axial length value may be data obtained by a user, such as a doctor, predicting the axial length of the subject's eye. The predicted axial length value may be a value input by the user based on multiple axial length values ​​measured at different examination times. In general, the axial length elongates irreversibly as the patient grows. The predicted axial length value is data that is equal to or greater than the multiple axial length values ​​measured at different examination times. The ophthalmologic information processing device can make it easier for the user to explain the treatment plan to the patient, etc., by displaying a graph showing multiple axial length values ​​measured at different examination times and the predicted axial length value.

[0015] <Embodiments> Exemplary embodiments of the present disclosure will be described below with reference to the drawings. The drawings are used to explain technical features that may be employed in the present disclosure, and the configurations and the like described are merely illustrative examples and are not intended to limit the scope of the present disclosure.

[0016] The ophthalmic information processing device 1 according to this embodiment is an ophthalmic device that performs at least one of photographing, examining, and measuring a subject's eye. Ophthalmic information is information obtained by photographing, examining, measuring, etc., using the ophthalmic device. In this embodiment, the ophthalmic information processing device 1 is an optical interference type axial length measurement device that can obtain axial length as ophthalmic information by examining the subject's eye. The ophthalmic information may be obtained by a user of the ophthalmic information processing device 1 manually inputting the ophthalmic information into the ophthalmic information processing device 1 via an operation unit 3, which will be described later.

[0017] 1 , the electrical configuration of the ophthalmologic information processing device 1 will be described. The ophthalmologic information processing device 1 includes a control unit 10, and a storage unit 2, an operation unit 3, a display unit 4, a printing unit 5, an examination unit 6, and an external device connection unit 7, 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 electrical circuits and the like that transmit drive signals (e.g., drive currents) to the display unit 4, the printing unit 5, and the examination unit 6 in response to instructions from the CPU.

[0018] The storage unit 2 includes a ROM, a RAM, a flash memory, etc. that store various parameters and the like required when the control unit 10 executes various programs. The storage unit 2 stores a program that causes the control unit 10 to execute ophthalmologic information processing, which will be described later with reference to FIG. 3 . 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 2. 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 7, which will be described later, i.e., transmitted as a transmission signal, and stored in the storage unit 2. In this case, the program for executing the ophthalmologic information processing may be stored in a non-transitory storage medium, such as an HDD, provided in the server.

[0019] The operation unit 3 includes buttons and the like operated by a user to input various instructions to the ophthalmologic information-processing device 1. The display unit 4 is a device capable of displaying various images, such as a monitor or projector. The printing unit 5 is a print head that prints images. The printing unit 5 may be any print head, such as a thermal print head, an inkjet head, or an LED print head. The examination unit 6 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 7 is an input / output interface for electrically connecting to other ophthalmologic devices or external information devices such as a PC. The external device connection unit 7 may be configured to allow wireless connection to external information devices.

[0020] The measurement value history data 20 will be described with reference to FIG. 2. In this embodiment, the measurement value history data 20 is stored in the storage unit 2. The measurement value history data 20 is a database that stores multiple pieces of ophthalmic information acquired by the ophthalmic information processing device 1. "Examination date and time" indicates the date and time when the ophthalmic 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. An R / L value of "R" indicates the right eye, and an R / L value of "L" indicates the left eye. "AL" and "REF." are ophthalmic 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)."

[0021] 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 values ​​manually input to the ophthalmological information processing device 1 by the user of the ophthalmological information processing device 1 by operating the operation unit 3, in addition to the values ​​of the ophthalmological information acquired by the ophthalmological information processing device 1.

[0022] Note that the measurement value history data 20 is not limited to being stored in the storage unit 2. The measurement value history data 20 may also be stored in a storage 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 7. 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 via the external device connection unit 7 and execute the ophthalmologic information processing described below.

[0023] An example of ophthalmologic information processing in this embodiment will be described with reference to FIG. 3 . The ophthalmologic information processing is executed when an instruction to examine the subject's eye is detected by the control unit 10. In this 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 3. 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 configuration in which an operating system (OS) running on the ophthalmologic information processing device 1 performs some or all of the ophthalmologic information processing based on instructions from the control unit 10 is also within the scope of the present disclosure.

[0024] 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 and an R / L (S2). The ID may be acquired by acquiring information input by a user to the ophthalmologic information processing device 1 via the operation unit 3. 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 the information reading unit reading information indicating the ID embedded in a card such as a medical institution's patient card. The ID may be linked to personal information including the patient's date of birth. The control unit 10 may calculate an initial graph (described later) and a patient age used to generate the graph based on the patient's date of birth linked to the ID. The control unit 10 may store the calculated patient age in the memory unit 2. 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 R / L value may be acquired by acquiring a value input by a user to the ophthalmologic information-processing device 1 via the operation unit 3. The R / L value may also be acquired by the control unit 10 automatically determining the value according to the position of the subject's eye relative to the ophthalmologic information-processing device 1, etc. The control unit 10 associates the R / L value with the acquired ID and stores it in the measurement value history data 20. The subject's eye is identified by the processing of S2.

[0025] The control unit 10 acquires the value of the axial length as ophthalmic information of the subject's eye (S3). The control unit 10 measures the axial length of the subject's eye by driving the examination unit 6 and acquires the measurement value. The control unit 10 may acquire the ophthalmic information from another external information device connected to the ophthalmic information processing device 1 via the external device connection unit 7. As described above, the control unit 10 may also perform the process of S3 by acquiring ophthalmic information written in the subject's medical record or the like that the user manually inputs into the ophthalmic information processing device 1 via the operation unit 3.

[0026] The control unit 10 acquires past ophthalmologic information corresponding to the same eye identified in the process of S2 by extracting it from the measurement value history data 20 (S4). The control unit 10 generates a graph that displays each value of the ophthalmologic information acquired in the processes of S3 and S4 in chronological order according to the examination time (S5). In this embodiment, the graph generated in the process of S5 is referred to as an "initial graph." The control unit 10 stores the generated initial graph in the memory unit 2. The control unit 10 outputs the initial graph (S6). In this embodiment, the graph generated in the ophthalmologic information processing, including the initial graph, is output by displaying it on the display unit 4.

[0027] 4, an example will be described in which a graph 40 corresponding to the initial graph generated in the process of S5 is displayed on the display unit 4 of the ophthalmologic information processing device 1 in the process of S6. The graph 40 shows an example of a graph in which both eyes of a subject with an ID of "G034" are the test eyes. The graph 40 has an axis 41 representing the subject's age as the horizontal axis. The axis 41 represents the progression of the subject's age on a predetermined scale.

[0028] The graph 40 includes a vertical axis 42 that is perpendicular to the axis 41. The vertical axis 42 indicates the axial length. In this embodiment, the graph 40 displays data 43 and 44. The data 43 and 44 are arranged in chronological order, with the axial length values ​​corresponding to the scale of the axis 42 and the examination date and time corresponding to the scale of the axis 41. The data 43 represents the axial length value of the left eye corresponding to the subject's age at the time of the examination, and is indicated by a marker "●." The data 44 represents the axial length value of the right eye corresponding to the subject's age at the time of the examination, and is indicated by a marker "○." The display unit 4 on which the graph 40 is displayed also includes buttons 45, 46, 47, 48, etc. The button 45 switches between displaying the data 43 and 44 for the left and right eyes. The button 46 switches between displaying the growth curve. The button 47 switches between displaying the predicted axial length data. The button 48 switches between displaying the treatment details.

[0029] When generating the initial graph in the process of S5, the control unit 10 generates the graph 40 based on the measurement values ​​associated with each piece of past ophthalmologic information acquired in the process of S4, and adds the current examination date and time acquired in the process of S1 to the graph 40. In this embodiment, the earliest examination date is when the subject was 6 years old, and the latest examination date is when the subject was 15 years and 6 months old. In the process of S5, the control unit 10 generates the graph 40 in which the time series range of the axis 41 extends from the earliest examination date to the latest examination date. Therefore, the graph 40 is displayed on the display unit 4 as a graph that allows a user to view the ophthalmologic information from the earliest examination date to the latest examination date. Therefore, by viewing the graph 40, the user can also observe the long-term trend of myopia.

[0030] Returning to the description of FIG. 3 , the control unit 10 acquires the ophthalmic information (axial length) specified by the user through operation of the operation unit 3 (S7). The information acquired here serves as the starting point for the predicted data of the axial length value to be plotted in a later step. Next, the control unit 10 acquires predicted data of the axial length value at the examination time input by the user through operation of the operation unit 3 (S8). The control unit 10 stores the acquired predicted data of the axial length value in the storage unit 2. Note that the user's operation of the operation unit 3 in S7 and S8 may be performed, for example, by operating the operation unit 3 to select coordinates on the graph displayed on the display unit 4, or by operating the operation unit 3 to input the ophthalmic information (axial length) or predicted data of the axial length value.

[0031] The control unit 10 generates a graph including predicted line data (a set of predicted data) of axial length values, with the ophthalmic information (axial length) and predicted data of axial length values ​​acquired in the processes of S7 and S8 as the start and end points, respectively (S9). The control unit 10 stores the generated graph in the memory unit 2. The control unit 10 outputs the graph by displaying it on the display unit 4 (S10). Note that, for example, if the user does not specify the ophthalmic information (axial length) in S7, the starting point of the predicted line of axial length values ​​may be the ophthalmic information (axial length) with the most recent examination date and time. Also, for example, if the user does not specify the ophthalmic information (axial length) in S7, the graph including the predicted line data of axial length values ​​may not be generated and output, and the predicted data of axial length values ​​acquired in the process of S8 may be output by displaying it on the display unit 4.

[0032] The control unit 10 determines whether the predicted axial length value obtained in the process of S8 is correct as predicted axial length value (S11). Note that a correct value as predicted data is data that comes later than the examination date and time of the ophthalmologic information (axial length) obtained in S7 and has an axial length value equal to or greater than the ophthalmologic information (axial length) obtained in S7. If the predicted axial length value is correct as predicted data (S11: YES), the control unit proceeds to the determination of S13. If the predicted axial length value is incorrect as predicted data (S11: NO), the control unit 10 re-acquires predicted axial length data (S12).

[0033] When the control unit 10 reacquires the predicted data of the axial length value in S12, the control unit 10 may display a message informing the user that the predicted data of the axial length value has been entered outside the range that can be treated as predicted data in the graph, thereby indicating that the predicted data of the axial length value is invalid as predicted data (see notification 51 in FIG. 5 ). The ophthalmologic information-processing device 1 may be configured so that predicted data outside the range that can be treated as predicted data cannot be entered.

[0034] Here, when the control unit 10 acquires predicted data on the axial length value of one of the left and right eyes in S8, it may automatically acquire predicted data on the axial length value of the other eye. For example, predicted data taking into account the difference between the left and right eyes of the subject eye may be added. In this case, the control unit 10 generates a graph based on the automatically acquired predicted data on the axial length value. The control unit 10 stores the generated graph in the memory unit 2.

[0035] Numerical value 49 in graph 40 in FIG. 4 represents the growth rate of axial length from the ophthalmologic information at a given examination date and time acquired by control unit 10 to the predicted axial length value acquired by control unit 10. When outputting the graph, control unit 10 may display the growth rate of axial length on the screen, for example, as "+0.25 mm / year." In this case, axial length growth rate 49 may be displayed on display unit 4 in a different color, for example, green if the growth rate of axial length is gradual, yellow if the growth rate of axial length is moderate, or red if the growth rate of axial length is rapid. Furthermore, depending on the growth rate of axial length, a message such as "moderate growth rate" may be displayed on display unit 4 in addition to growth rate 49.

[0036] Returning to the description of Fig. 3, the control unit 10 determines whether an instruction to terminate the ophthalmologic information processing has been input via the operation unit 3 (S13). If an instruction to terminate the ophthalmologic information processing has not been input via the operation unit 3 (S13: NO), the control unit 10 returns the process to S6 and continues the subsequent processes. If an instruction to terminate the ophthalmologic information processing has been input via the operation unit 3 (S13: YES), the control unit 10 terminates the ophthalmologic information processing.

[0037] Graph 60 in FIG. 6 is an example of history data of axial length measurements when axial length measurement is performed after inputting predicted axial length data. When ophthalmologic information processing is started, the control unit 10 acquires the current date and time as the examination date and time. 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 and an R / L. The ID may be acquired by acquiring information input by a user to the ophthalmologic information processing device 1 via the operation unit 3. Alternatively, the ID may be acquired by acquiring information input to the ophthalmologic information processing device 1. The ophthalmologic information processing device 1 may include an information reading unit such as a card reader, and the information reading unit may read information indicating the ID embedded in a card such as a medical institution's patient card, thereby acquiring the ID. The control unit 10 associates the acquired ID with the acquired examination date and time and stores it in the measurement value history data 20. The R / L value may be acquired by acquiring information input by a user to the ophthalmologic information processing device 1 via the operation unit 3. The value of R / L may be acquired by the control unit 10 automatically determining it according to the position of the subject's eye relative to the ophthalmologic information-processing device 1. The control unit 10 associates the value of R / L with the acquired ID and stores it in the measurement value history data 20. The subject's eye is identified by the process of acquiring the ID and the value of R / L.

[0038] The control unit 10 acquires the value of the axial length as ophthalmic information of the subject's eye. The control unit 10 measures the axial length of the subject's eye by driving the examination unit 6 and acquires the measurement value. The control unit 10 may acquire some 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 7. As described above, the control unit 10 may also acquire the value of the axial length by having the user view the ophthalmic information written in the subject's medical record or the like and manually input the information into the ophthalmic information processing device 1 via the operation unit 3.

[0039] The control unit 10 acquires past ophthalmologic information corresponding to the identified eye to be examined by extracting it from the measurement value history data 20. The control unit 10 also acquires predicted data on the value of the axial length for the identified eye to be examined from the storage unit 2. The control unit 10 uses the acquired ophthalmologic information and predicted data on the value of the axial length to generate a graph that displays the values ​​in chronological order according to the examination period. The control unit 10 stores the generated graph in the storage unit 2. The control unit 10 outputs the graph to the display unit 4.

[0040] The graph 60 includes a horizontal axis 61 representing the subject's age. The axis 61 indicates the progression of the subject's age over time on a predetermined scale. The graph 60 also includes a vertical axis 62 perpendicular to the axis 61. The axis 62 indicates the axial length. The graph 60 also includes data 63 indicating the value of the axial length and prediction line data (a collection of prediction data) 64 connecting the measured axial length value with predicted data of the axial length value at a predetermined examination time. The data 63 and the prediction line data 64 are arranged in chronological order, with the axial length value corresponding to the scale of the axis 62 and the age of the subject at the time of the examination corresponding to the scale of the axis 61. The data 63 is the value of the axial length of the left eye corresponding to the age of the subject at the time of the examination, and is indicated by a marker "●."

[0041] In addition, if the value of data 63 acquired by control unit 10 exceeds predicted line data 64 based on predicted data of the axial length value acquired by control unit 10 (for example, latest data 65), control unit 10 outputs graph 60 to display unit 4 and at the same time outputs a notification (notification 66) to display unit 4, for example, that data 63 exceeds predicted line data 64.

[0042] As in the above embodiment, the control unit 10 executes a process of adding to a graph the predicted data of the axial length value at the examination time input by the user by operating the operation unit 3. This makes it possible to generate a graph of predicted data of the axial length value even for a subject's eye whose predicted axial length value does not follow the growth curve. This makes it easier for the user to explain the treatment plan to the patient, etc.

[0043] The control unit 10 also outputs, to the graph, predicted data of axial length values ​​previously added to the graph and new axial length values ​​obtained in the examination, allowing the user to compare the predicted data of axial length previously predicted with the axial length values ​​measured in examinations after the user input the predicted data of axial length values ​​by operating the operating means.

[0044] Furthermore, when the control unit 10 detects that the axial length value newly obtained in the examination exceeds the predicted data, it notifies the user that the axial length value exceeds the predicted data, thereby reducing the possibility that the user will overlook a case where the axial length value is higher than the predicted data of a previously predicted axial length value.

[0045] Furthermore, when the control unit 10 adds predicted data of the axial length value of one of the examinee's eyes to the graph, the control unit 10 also adds predicted data of the axial length value of the other examinee's eye to the graph, thereby eliminating the need for the user to plot predicted data for each eye.

[0046] The control unit 10 also limits the range in which predicted data of the axial length value can be added, thereby preventing the user from mistakenly adding predicted data of the axial length value in the backward direction of the graph or mistakenly adding predicted data of the axial length value in the downward direction of the axial length.

[0047] Furthermore, when the predicted data of the axial length value is added to the graph, the control unit 10 displays the elongation of the axial length value as an elongation rate on the screen, thereby allowing the user to grasp the elongation rate of the axial length on the screen without having to calculate it.

[0048] The control unit 10 also displays on the screen the rate of change in the elongation of the axial length over a certain period of time, based on the numerical value of the elongation of the axial length, which makes it easier for the user to determine whether the elongation of the axial length is rapid or not.

[0049] In the above embodiment, the graph (including the initial graph) is configured to display data on axial length. However, for example, the graph may also be configured to display data on ocular refractive power. Furthermore, for example, the graph may also be configured to display both data on axial length and data on ocular refractive power. In this case, the graph may display a first vertical axis indicating axial length and a second vertical axis indicating ocular refractive power. For example, the display of data on the graph may be switched by pressing a button. When displaying a graph of ocular refractive power, the control unit 10 may display predicted data on the value of ocular refractive power input by the user through the operation unit 3 on the graph. This makes it possible to explain treatment plans and the like using the graph of ocular refractive power.

[0050] In the above embodiment, the display of the growth curve of the graph can be switched by pressing a button. However, for example, the growth curve may not be displayed, or may be displayed at all times.

[0051] In the above embodiment, the control unit 10 is configured to add predicted data of the axial length to the graph based on an operation signal generated when the user presses an arbitrary location on the graph displayed on the touch panel of the monitor 9. However, for example, the predicted data of the axial length may be added to the graph by the user inputting the predicted data of the axial length to the ophthalmologic information-processing device 1.

[0052] In the above embodiment, in S8, the user inputs predicted data for the axial length at a predetermined examination time, but the user may input only the predicted data for the axial length without inputting the examination time. In this case, the predicted data displayed on the graph is a straight line perpendicular to the axis indicating the axial length.

[0053] In the above embodiment, the predicted axial length data can be added only in the direction of axial length extension and in the direction that matches the passage of time compared with the measured axial length data connected by a line. However, the predicted axial length data may be input in the direction of axial length reduction or in the direction opposite to the passage of time. For example, the input range of the predicted axial length data may be set to either a restricted mode or an open mode.

[0054] In the above embodiment, the control unit 10 starts measurement in response to an operation signal from the operation unit 3, which may include a measurement start switch, a freeze switch on the monitor 9, or a foot switch, but this is not limiting. In this embodiment, the control unit 10 may automatically start measurement when the amplitude of the echo signal exceeds a preset tolerance level. The control unit 10 may continuously acquire measurement values ​​until the measured values ​​become stable over multiple measurements and a predetermined number of measurement values ​​have been obtained.

[0055] REFERENCE SIGNS LIST 1 ophthalmological information processing device 2 storage unit 4 display unit 10 control unit 40 graph 50 graph 60 graph

Claims

1. An ophthalmological information processing device that processes ophthalmological information of a subject's eye, wherein a control unit of the ophthalmological information processing device executes a value acquisition process that acquires multiple axial length values ​​measured at different examination times for the subject's eye, a graph generation process that generates a graph in which the multiple axial length values ​​acquired by the value acquisition process are arranged in chronological order according to the examination time, and an addition process that adds predicted data of axial length values ​​input by a user operating an operation means to the graph.

2. An ophthalmologic information processing device according to claim 1, wherein the control unit outputs to the graph the predicted data previously added to the graph and the value of axial length newly obtained in the examination.

3. An ophthalmologic information processing device according to claim 2, wherein the control unit notifies the user when the value of the axial length newly obtained in the examination exceeds the predicted data.

4. An ophthalmologic information processing device according to any one of claims 1 to 3, characterized in that when the control unit adds predicted data for the axial length value of one of the examinee's eyes to the graph, the control unit also adds predicted data for the axial length value of the other examinee's eye to the graph.

5. An ophthalmologic information processing device according to any one of claims 1 to 4, wherein the control unit limits the range within which predicted data of the axial length value can be added.

6. An ophthalmologic information processing device according to any one of claims 1 to 5, characterized in that when predicted data for the value of the axial length is added to the graph, the control unit displays on the screen the extension of the value of the axial length as an extension rate.

7. An ophthalmologic information processing device according to any one of claims 1 to 6, characterized in that the control unit displays on the screen the degree of change in the elongation of the axial length within a certain period of time based on a numerical value that represents the elongation of the axial length value as an elongation rate.

8. A program used in an ophthalmic information processing device that processes ophthalmic information of a subject's eye, characterized in that, when executed by a control means of the ophthalmic information processing device, the program causes the ophthalmic information processing device to execute the following steps: a value acquisition processing step for acquiring multiple axial length values ​​measured at different examination times for the subject's eye; a graph generation processing step for generating a graph in which the multiple axial length values ​​measured at different examination times for the subject's eye are arranged in chronological order according to the examination time; and an addition processing step for adding predicted data of axial length values ​​input by a user operating an operation means to the graph.

Images