JPWO2019172272A1 - Intraocular lens design equipment, design method and design program - Google Patents

Abstract

Provided are an intraocular lens design device, a design method, and a design program that can assist a user in reducing operational errors such as inputting numerical values used for designing an intraocular lens. The intraocular lens design device is based on a display unit that displays a screen that accepts user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted, and the received user input. It also has a display control unit that controls the display unit so as to display a first index whose magnitude changes according to the magnitude of the refractive power in the strong main meridian direction on the screen.

Description

The present invention relates to an intraocular lens design device, a design method and a design program.

In the treatment of cataracts, an intraocular lens inserted as a substitute for the crystalline lens to replace the human opaque crystalline lens and correct the refraction has been put into practical use. In intraocular lens insertion surgery in cataract treatment, for example, an incision (incision) of several millimeters is made on the edge of the cornea, strong cornea, etc., and the crystalline lens is crushed by ultrasonic emulsification and suction to remove it from the incision. After that, the intraocular lens is inserted and fixed by the intraocular lens insertion device.

The type of intraocular lens to be inserted and the characteristics such as refractive power differ for each patient's eyeball, and it is troublesome for doctors and the like to determine which intraocular lens is appropriate based on the eyeball measurement results for each patient. there is a possibility. Therefore, various techniques for supporting the design and selection of an intraocular lens suitable for the patient's eyeball have been proposed (Patent Documents 1 and 2).

Special Table 2016-520336 Special Table 2016-531666

In the above technique, the user of the device used in the design of the intraocular lens operates the device and inputs the measurement result of the patient's eyeball. At this time, there is a possibility that the user makes a mistake in inputting or selecting the numerical value of the measurement result, such as mistaking the numerical value of the strong main meridian and the numerical value of the weak main meridian. However, with the above technique, there is a possibility that the user may proceed with the design work of the intraocular lens without noticing the above-mentioned operation error.

In view of the above circumstances, the technology disclosed in the present disclosure provides an intraocular lens design device, a design method, and a design program that can assist the user in reducing operational errors such as inputting numerical values used for designing the intraocular lens. The purpose is to provide.

On one side, the intraocular lens design device disclosed in the present disclosure is a display unit that displays a screen that accepts user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted. A display control unit that controls the display unit to display a first index whose size changes according to the magnitude of the refractive power in the strong main meridian direction on the screen based on the received user input.

As a result, when the user inputs the refractive power in the strong main meridian direction in the cornea of the patient's eyeball on the above-mentioned displayed screen, the magnitude of the refractive power can be visually confirmed by an index, so that the refractive power of the refractive power can be confirmed. Even if you enter the wrong value, you can easily notice the wrong entry from the index.

Further, in the above-mentioned intraocular lens design device, the screen is a screen that accepts user input of information on the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted, and is a display control unit. May control the display unit to display a second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction on the screen. Further, the display control unit may control the display unit so that the first index and the second index are displayed in different graphic designs. Further, the display control unit may control the display unit so as to display the first index and the second index in the area adjacent to the input position of the user input on the screen.

Further, in the above-mentioned intraocular lens design device, the screen is a screen that also accepts user input of information regarding the magnitude of the angle deviation of the intraocular lens inserted into the eyeball, and the display control unit is the magnitude of the angle deviation. The display unit may be controlled to display information regarding residual astigmatism of the eyeball after surgery calculated based on the above.

Further, in the above-mentioned intraocular lens design device, the display control unit provides information on the intraocular lens in which the magnitude of residual astigmatism when inserted into the eyeball is 0, which is specified based on the received user input. The display unit may be controlled to display.

Further, in the above-mentioned intraocular lens design device, when the user input is the radius of curvature of the cornea and the corneal refractive power, the display control unit calculates the refractive power using the radius of curvature and the corneal refractive power. Is controlled so as to display, and when the user input is the refractive power of the cornea and the refractive power of the cornea, the radius of curvature calculated using the refractive power and the refractive power of the cornea is displayed. The unit may be controlled.

Further, in the above-mentioned intraocular lens design device, the display unit may display a screen that accepts user input of information regarding the size by operating a slider or a button that increases or decreases the value.

下記の数式（１）〜（３）に従って算出される計算結果を表示するよう表示部を制御するようにしてもよい。

Further, in the above-mentioned intraocular lens design device, when the display unit defines the received user input by the following vector, the display unit

The display unit may be controlled so as to display the calculation result calculated according to the following mathematical formulas (1) to (3).

Further, the display control unit may control the display unit so as to display an eye image on the background of the first index based on the received user input.

Further, in one aspect of the method of designing an intraocular lens disclosed in the present invention, the display unit of the information processing device provides information on the magnitude of the refractive power in the strong meridian direction in the cornea of the eyeball into which the intraocular lens is inserted. A screen that accepts user input is displayed, and the display control unit of the information processing device displays a first index whose size changes according to the magnitude of the refractive power in the strong main meridian direction based on the received user input. Control the display unit so that it is displayed in. Further, in the above-mentioned intraocular lens design method, the screen is a screen that accepts user input of information on the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted, and is a display control unit. The display unit may be controlled so as to display a second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction on the screen. Further, the display control unit may control the display unit so that the first index and the second index are displayed in different graphic designs. Further, the display control unit may control the display unit so as to display the first index and the second index in the area adjacent to the input position of the user input on the screen.

In addition, the intraocular lens design program disclosed in the present disclosure is a screen that accepts user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted, on one side. Is displayed on the display unit of the computer, and the display unit is displayed on the screen so as to display the first index whose size changes according to the magnitude of the refractive power in the strong main meridian direction based on the received user input. Execute the process to be controlled. Further, in the above-mentioned intraocular lens design program, the screen is a screen that also accepts user input of information on the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted, and further to the computer. , The process of controlling the display unit may be executed so as to display the second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction on the screen. Further, the computer may further execute a process of controlling the display unit so that the first index and the second index are displayed in different graphic designs. Further, the above-mentioned intraocular lens design program further executes a process of controlling the display unit so that the first index and the second index are displayed on the computer in the area adjacent to the input position of the user input on the screen. You may let me.

According to the technology disclosed in the present invention, it is possible to provide an intraocular lens design device, a design method, and a design program that can assist a user in reducing operational errors such as inputting numerical values used for designing an intraocular lens. it can.

FIG. 1 is a diagram showing an example of a configuration of an information processing device according to an embodiment. FIG. 2 is a flowchart showing an example of processing executed by the information processing apparatus according to the embodiment. FIG. 3 is a flowchart showing an example of a process executed by the information processing apparatus in parallel with the process of FIG. 2 in one embodiment. FIG. 4 is a flowchart showing an example of processing executed by the server in one embodiment. FIG. 5 is a flowchart showing an example of processing executed by the information processing apparatus following the processing of the server of FIG. 4 in one embodiment. FIG. 6 is a diagram showing an example of a screen in which the user inputs information on the patient's eyeball in one embodiment. FIG. 7 is a diagram showing an example of a screen displaying information regarding the intraocular lens generated in one embodiment. FIG. 8 is a flowchart showing an example of processing different from that of FIG. 2 executed by the information processing apparatus in one embodiment. FIG. 9 is a flowchart showing an example of processing different from that of FIG. 4 executed by the server in one embodiment. FIG. 10 is a flowchart showing an example of processing executed by the information processing apparatus following the processing of the server of FIG. 9 in one embodiment. FIG. 11 is a diagram showing an example of a screen in which the user inputs preoperative and postoperative patient eyeball information in one embodiment. FIG. 12 is a diagram showing an example of a screen for displaying information regarding astigmatism of the eyeball of a postoperative patient generated in one embodiment. FIG. 13 is a diagram showing an example of the correspondence between the combination of the magnitude of the angle deviation and the magnitude of the residual astigmatism and the image of the simulation result stored in the server in one embodiment. FIG. 14 is a diagram showing a modified example of the display area displayed on the screen of FIG. FIG. 15 is a diagram showing a modified example of the screen of FIG. FIG. 16 is a diagram showing an example of a warning display. FIG. 17 is a diagram showing a modified example of the screen of FIG. 7. FIG. 18 is a diagram showing a modified example of the button. FIG. 19 shows a first display state of a modified example of the screen of FIG. FIG. 20 shows a second display state of a modified example of the screen of FIG. FIG. 21 shows a third display state of a modified example of the screen of FIG. FIG. 22 is a diagram showing an example of a screen of the calculation result.

Hereinafter, embodiments relating to the disclosed technology will be described with reference to the drawings. The detailed description below is an example, and does not limit the configuration of the embodiment.

The information processing device 10 in one embodiment will be described. The information processing device 10 is a device used by a user including a medical worker such as a doctor, such as a personal computer (PC), a tablet PC, or a smartphone. Here, it is assumed that the information processing device 10 is a PC. The information processing device 10 is an example of an intraocular lens design device. Further, in the following description, as an example, the intraocular lens is assumed to be a toric lens, but the type of intraocular lens to which this embodiment can be applied is not limited to this.

As shown in FIG. 1, the information processing unit 10 includes a Central Processing Unit (CPU) 101, a Random Access Memory (RAM) 102, a Hard Disk Drive (HDD) 103, a Graphics Processing Unit (GPU) 104, an input interface 105, and communication. It has an interface 106. Further, the GPU 104, the input interface 105, and the communication interface 106 are connected to the monitor 20, the input device 30, and the network 40, respectively. The CPU 101, RAM 102, HDD 103, GPU 104, input interface 105, and communication interface 106 are connected to each other via a bus 107. Further, the server 50 has a CPU 501, a RAM 502, an HDD 503, and a communication interface 504. The CPU 501, the RAM 502, the HDD 503, and the communication interface 504 are connected to each other via the bus 505.

The information processing device 10 is connected to the server 50 via the network 40. In the present embodiment, the user operates the input device 30 or the like to input information about the patient's cornea, astigmatism, etc. into the information processing device 10. The input information is transmitted from the information processing device 10 to the server 50 via the network 40. The server 50 executes the process described below using the information received from the information processing device 10 to generate information on the intraocular lens suitable for the eyeball of the patient. The generated information is transmitted from the server 50 to the information processing device 10 via the network 40. The information processing device 10 displays the information received from the server 50 on the monitor 20.

In the present embodiment, in the information processing apparatus 10, the CPU 101 executes various processes described below by expanding and executing various programs stored in the HDD 103 in the RAM 102. Similarly, in the server 50, the CPU 501 expands and executes various programs stored in the HDD 503 in the RAM 502 to execute various processes described below. FIG. 2 shows an example of a flowchart of processing executed by the information processing apparatus 10 in the present embodiment under the control of the CPU 101. As an example, after the power of the information processing device 10 is turned on, a program for the user to operate the input device 30 to specify an intraocular lens to be inserted into the eyeball of a patient described below (hereinafter referred to as a flowchart program). ) Is given, the CPU 101 starts processing the flowchart shown in FIG.

In OP 101, the CPU 101 expands the calculator program stored in the HDD 103 into the RAM 102 and starts it. When the CPU 101 starts the calculator program, it advances the process to OP 102.

In OP 102, the CPU 101 receives input of information about the patient's eyeball by the user from the input device 30 or the like. FIG. 6 shows an example of the screen 1001 in which information about the patient's eyeball is input by the user, which is displayed by the calculator program activated in OP101. The screen 1001 is displayed on the monitor 20. The monitor 20 is an example of a display unit that displays a screen that accepts user input of information regarding the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted. Further, the display control unit that controls the display unit so that the CPU 101 displays on the screen a first index whose magnitude changes according to the magnitude of the refractive power in the strong main meridian direction based on the received user input. This is an example.

In OP 102, the user operates the input device 30 or the like on the screen 1001 of FIG. 6 displayed on the monitor 20 to input information regarding the patient's eyeball. In the present embodiment, it is assumed that the eyeball of the patient has been examined in advance and the information input by the user in OP 102 has been obtained.

In the screen 1001 illustrated in FIG. 6, in the "left and right eye" column, the eyeball (right eye or left eye) of the patient into which the intraocular lens is inserted is selected. In the "Corneal Refractive Index" field, the value of the corneal refractive index of the patient's eyeball is input. In the "Weak main meridian direction of corneal astigmatism" column, the refractive power in the weak main meridian direction in the cornea of the patient's eyeball ("refractive power" in the figure), radius of curvature ("r" in the figure), and axial angle ("r" in the figure). Each value of "axis angle") is input. Here, when only the corneal refractive index and the radius of curvature are input, the refractive power is calculated by a predetermined formula using the corneal refractive index and the radius of curvature. When only the corneal refractive index and the refractive power are input, the radius of curvature is calculated by a predetermined formula using the corneal refractive index and the refractive power. In the "Strong meridian direction of corneal astigmatism" column, the refractive power ("refractive power" in the figure), radius of curvature ("r" in the figure), and axial angle ("r" in the figure) in the cornea of the patient's eyeball. Each value of "axis angle") is input. Similar to the weak main meridian, when only the refractive index of the cornea and the radius of curvature are input, the refractive power is calculated by a predetermined formula using the refractive index of the cornea and the radius of curvature. When only the corneal refractive index and the refractive power are input, the radius of curvature is calculated by a predetermined formula using the corneal refractive index and the refractive power. In the "Magnitude of evoked astigmatism" column, the magnitude of evoked astigmatism caused by an incision to be created in the cornea when the intraocular lens is inserted is input.

In the "incision position" field, an angle indicating the incision position of the cornea is input. As an example, the angle indicating the incision position of the cornea is the creation of an incision from the 0 ° direction with the center of the pupil of the eyeball as the origin and the horizontal line from the origin to the nasal side as the angle 0 ° in the front view of the eye. It is the angle measured counterclockwise to the position. Further, in the present embodiment, the "strong main meridian direction" can be selected in the "incision position" column. When making an incision in the cornea, it is known that in the cornea, the refractive power in the extending direction of the straight line connecting the position where the incision is made and the center of the cornea in front view becomes small. Therefore, by creating an incision in the direction of the strong main meridian of the cornea, the astigmatism of the cornea itself can be reduced, so that the degree of correction of the astigmatism by the power of the intraocular lens can be further reduced. Therefore, by allowing the user to select the "strong main meridian direction" in the "incision position" field, it is possible to assist the user in determining the position for creating the incision wound.

In the "posterior astigmatism" column, the intraocular lens to be inserted into the patient's eyeball is specified in consideration of the astigmatism on the posterior surface of the patient's corneum (posterior astigmatism) ("considered" in the figure), or the astigmatism is not considered. Whether to specify the intraocular lens to be inserted into the patient's eyeball (“not considered” in the figure) is selected. When the user selects "Consider" in the "Rear astigmatism" field, a field for the user to input the magnitude and axis angle of the rear astigmatism is displayed.

It should be noted that the input of these input information may be confirmed by selecting a predefined value instead of inputting the value by the user. When any value is input by the user in OP 102, the CPU 101 advances the process to OP 103.

In the OP 103, the CPU 101 determines whether or not the value input in the OP 102 is the value of the refractive power in the weak main meridian direction or the strong main meridian direction. In the example shown in FIG. 6, it is determined whether or not the value of "refractive power" in the "weak main meridian direction of corneal astigmatism" column or the "strong main meridian direction of corneal astigmatism" is input. When the input value is the value of the refractive power in the weak main meridian direction or the strong main meridian direction (OP103: Yes), the CPU 101 advances the process to OP104. On the other hand, if the input value is not the value of the refractive power in the weak main meridian direction or the strong main meridian direction (OP103: No), the CPU 101 returns the process to OP102 and further accepts the input from the user.

In OP 104, the CPU 101 displays on the screen 1001 an index whose display changes according to the magnitude of the refractive power based on the value input in OP 102. In the example shown in FIG. 6, a display area 1001f for displaying the index is provided at a position adjacent to the above-mentioned field in which the user inputs information about the patient's eyeball. In this way, by providing the display area 1001f at a position adjacent to the area where the user inputs information, that is, at a position where the user can check without scrolling the screen, the user can obtain the refractive power in the strong meridian direction. It is easy to notice whether the refractive power in the weak main meridian direction is input in reverse. Next, when the CPU 101 completes the process of displaying the index, the CPU 101 ends the process of this flowchart.

Further, as an example, a plurality of concentric circles are displayed as scales in the display area 1001f, and an index 1001a for the strong main meridian indicating the magnitude of the refractive power in the strong main meridian direction and a weak main meridian so as to overlap the scale. An index 1001b for a weak main meridian indicating the magnitude of the refractive power in the direction is displayed. The index 1001a is an example of the first index, and the index 1001b is an example of the second index.

The index 1001a is a mark extending radially outward from the center of the concentric circle in the strong main meridian direction, and the index 1001b is a mark extending radially outward from the center of the concentric circle in the weak main meridian direction. Further, the index 1001a representing the magnitude of the refractive power in the strong main meridian direction has a portion that is convex toward the outside of the concentric circles of the scale so that the user can identify the magnitude of the refractive power in each main meridian direction. A mark is used, and as an index 1001b indicating the magnitude of the refractive power in the weak main meridian direction, a mark having a portion concave toward the center of the concentric circle is used. Further, the size of the index 1001a changes according to the size of the value input in the "refractive power" in the "strong main meridian direction of corneal astigmatism" column of the screen 1001. Further, the size of the index 1001b changes according to the size of the value input to the "refractive power" in the "weak main meridian direction of corneal astigmatism" column of the screen 1001.

In this way, the index 1001a and the index 1001b are displayed in different graphic designs according to the magnitude of the refractive power in the strong main meridian direction and the weak main meridian direction input on the screen 1001, and the size of each graphic design. By changing the value, the user can easily visually distinguish between the magnitude of the input refractive power in the strong main meridian direction and the magnitude of the refractive power in the weak main meridian direction. The index 1001a and the index 1001b may be displayed in different sizes. Further, the stretching direction of this index may change according to the input axial angle.

Further, in the example shown in FIG. 6, similarly to the indexes 1001a and 1001b, the bar 1001c for the weak main meridian indicating the magnitude of the refractive power in the weak main meridian direction is displayed in the "weak main meridian direction of corneal astigmatism" column. , The bar 1001d for the strong main meridian indicating the magnitude of the refractive power in the strong main meridian direction is displayed in the "strong main meridian direction of corneal astigmatism" column, respectively. As an example, the bars 1001c and 1001d have the minimum value of the range of refractive power that can take one end (“35D” in the figure) and the maximum value of the range of the refractive power that can take the other end (“50D” in the figure). , The position of the input refractive power value in the range is displayed as a bar extending from the end of the minimum value. By enabling the display of bars and the input of numerical values by moving the bars, the user can easily imagine how large the magnitude of the refractive power is in the range from the minimum value to the maximum value, and the mouse. Since it is possible to input without switching the input method from the operation to the numeric keypad input, the trouble can be saved. The range from the minimum value to the maximum value can be appropriately set at the time of manufacturing or by the user.

If the user can distinguish between the refractive power in the strong main meridian direction and the refractive power in the weak main meridian direction by the indexes 1001a and 1001b and the bars 1001c and 1001d, the shapes of the marks and bars are not limited to the above configuration. Further, the indexes 1001a and 1001b and the bars 1001c and 1001d may be displayed in different colors in the weak main meridian direction and the strong main meridian direction. When the CPU 101 displays the index 1001a and the bar 1001d or the index 1001b and the bar 1001c according to the input refractive power value, the processing of this flowchart ends.

As described above, according to the present embodiment, when the user inputs the refractive power in the strong main meridian direction and the refractive power in the weak main meridian direction, whether or not the value input by the above index or bar is appropriate. It can be grasped sensuously, and even if the values are input incorrectly, it can be said that it is easier to notice the error than in the conventional case where the value is visually confirmed.

Next, the process executed by the CPU 101 in parallel with the process of FIG. 2 will be described with reference to the flowchart of FIG. The process of FIG. 3 is a process of transmitting various information input by the user in the process of FIG. 2 to the server 50. In OP201, the CPU 101 determines whether or not the user has instructed the user to perform a calculation for identifying an intraocular lens to be inserted into the patient's eyeball based on the above input values. In the case of the example shown in FIG. 6, specifically, it is determined whether or not the user has performed an operation such as pressing or clicking on the button 1001e for performing the calculation displayed on the screen 1001. When the user gives an instruction to execute the calculation (OP201: Yes), the CPU 101 advances the process to OP202. On the other hand, if the operation of the button 1001e by the user has not occurred (OP201: No), the CPU 101 repeats the process of OP201.

In OP202, the CPU 101 determines whether or not the value input in OP102 is within a range that can be regarded as normal as the value of the refractive power. The range can be appropriately set at the time of manufacturing or by the user. If the input value is a normal value (OP202: Yes), the CPU 101 advances the process to OP203. On the other hand, if the input value is an abnormal value, that is, a value outside the range that can be regarded as normal (OP202: No), the CPU 101 advances the process to OP204. In OP204, the CPU 101 displays an error requesting input again because the value input in OP102 is an abnormal value. For example, the error may be a message displayed on the screen 1001 illustrated in FIG. 6, or may be notified by a dialog box or voice. When the CPU 101 displays an error, the CPU 101 returns the process to OP 102. Therefore, according to the present embodiment, by displaying an error for the refractive power input by the user, it is possible to prevent the calculation for identifying the intraocular lens from being executed while the erroneous input is performed.

In OP203, the CPU 101 transmits various information input to the user in the process of FIG. 2 to the server 50. When the CPU 101 transmits the information to the server 50, the CPU 101 ends the process of this flowchart.

Next, the process executed by the CPU 501 of the server 50 following the process of FIG. 3 will be described with reference to the flowchart of FIG. By the process of FIG. 4, an intraocular lens considered to be suitable for the patient's eyeball is identified based on the information of the patient's eyeball input by the user.

In OP301, the CPU 501 receives the patient's eyeball information input by the user in the information processing device 10 by the process of FIG. 2 above. Next, the CPU 501 advances the process to OP 302. In OP302, the CPU 501 performs postoperative corneal astigmatism (so-called postoperative corneal astigmatism) on the assumption that an operation for inserting an intraocular lens is performed on the patient based on the information of the patient's eyeball received in OP301. To calculate. For the calculation of postoperative corneal astigmatism (magnitude and axial angle of astigmatism, etc.), a vector calculation called the Alpins method using so-called preoperative anterior corneal astigmatism, preoperative posterior corneal astigmatism, and induced astigmatism is adopted as an example. ..

数４に示す数式（１）〜（３）に従ってベクトルを計算をする。

Specifically, when the received user input is defined by the vector shown in Equation 3,

The vector is calculated according to the mathematical formulas (1) to (3) shown in Equation 4.

Here, the magnitudes of preoperative anterior corneal astigmatism A and preoperative posterior corneal astigmatism B are values calculated from the magnitudes of the refractive forces of the weak and strong main meridian lines included in the received patient's eyeball information. The axial angle α of the preoperative anterior corneal astigmatism A is the angle of the weak main meridian (or strong main meridian) of the anterior astigmatism included in the received patient's eyeball information, and the axial angle of the preoperative posterior corneal astigmatism B. β is the angle of the weak main meridian (or strong main meridian) of posterior astigmatism included in the received patient's eyeball information. Further, the size of the evoked astigmatism S is the size of the evoked astigmatism included in the received patient's eyeball information, and the axial angle θ of the evoked astigmatism is the angle of the incision position included in the received patient's eyeball information. (Or an angle orthogonal to the angle of the incision position). Since the calculation of postoperative corneal astigmatism C is well known, detailed description of the calculation will be omitted here. Further, the calculation of postoperative corneal astigmatism C is not limited to the Alpins method, and other well-known calculation methods such as the Jaffe method and the Clavy method may be adopted. When the CPU 501 finishes the calculation of postoperative corneal astigmatism, the process proceeds to OP303.

In OP303, the CPU 501 has the minimum magnitude of astigmatism (so-called residual astigmatism or postoperative astigmatism) when it is assumed that an intraocular lens is inserted into the eyeball of the patient based on the postoperative corneal astigmatism calculated in OP302. Identify the intraocular lens. In the present embodiment, as an example, a plurality of types of intraocular lens models that can be inserted into the eyeball of a patient are prepared, and lens information regarding the intraocular lens of each model is stored in advance in HDD 503 of the server 50. The lens information stored here includes a value indicating the magnitude of the cylindrical refractive power on the toric surface of the intraocular lens, a value indicating the amount of reduction in corneal astigmatism, and the like.

Then, the CPU 501 calculates the magnitude of residual astigmatism based on the magnitude of the cylindrical refractive power on the toric surface of the intraocular lens of each model and the amount of reduction in corneal astigmatism, and the model in which the magnitude of residual astigmatism is minimized. Intraocular lens (hereinafter referred to as "intraocular lens A") is specified. When the CPU 501 identifies the intraocular lens A, the process proceeds to OP304.

In the following treatments of OP304 to OP309, among the intraocular lenses inserted into the eyeball of the patient, the intraocular lens considered to be the most suitable is specified. Here, it is generally considered that astigmatism is easier to see than direct astigmatism and astigmatism included in astigmatism. Therefore, in the present embodiment, instead of simply selecting an intraocular lens that minimizes residual astigmatism as a lens that is considered to be optimal, there is an intraocular lens that produces direct astigmatism even if residual astigmatism is not minimized. If so, preferentially select it as the most suitable lens. The specific processing will be described below.

In OP 304, the CPU 501 calculates the axial angle of residual astigmatism calculated by the processing of OP 303 for the intraocular lens A. Then, the CPU 501 determines whether or not the calculated shaft angle is within the range of −10 ° to + 10 ° (or 170 ° to 190 °), that is, whether or not the shaft angle is approximately 0 °. The angle range that serves as a criterion for determining the calculated shaft angle in OP304 is not limited to the above example. When the axial angle of the residual astigmatism by the intraocular lens A is approximately 0 ° (OP304: Yes), the CPU 501 advances the process to OP308. On the other hand, if the axial angle of the residual astigmatism by the intraocular lens A is not approximately 0 ° (OP304: No), the CPU 501 advances the process to OP305.

In OP305, the CPU 501 has an axial angle of residual astigmatism calculated by OP304 for the intraocular lens A in the range of 80 ° to 100 ° (or 260 ° to 280 °), that is, the axial angle is approximately 90 °. Judge whether or not. Similar to OP304, the angle range that serves as a criterion for determining the calculated shaft angle is not limited to the above example. When the axial angle of the residual astigmatism by the intraocular lens A is approximately 90 ° (OP305: Yes), the CPU 501 advances the process to OP306. On the other hand, when the axial angle of the residual astigmatism by the intraocular lens A is not approximately 90 ° (OP305: No), the CPU 501 advances the process to OP308.

In OP306, the CPU 501 calculates the axial angle of residual astigmatism for the intraocular lens of each model, and identifies the intraocular lens (hereinafter referred to as “intraocular lens B”) in which the residual astigmatism becomes direct astigmatism. Here, it may be appropriately set as to what range the axial angle of residual astigmatism is to be specified as an intraocular lens that causes direct astigmatism. When the intraocular lenses of a plurality of models are specified as intraocular lenses that cause direct astigmatism, all the specified intraocular lenses may be used as intraocular lenses B, and the magnitude of residual astigmatism is minimized. The intraocular lens may be the intraocular lens B. When the CPU 501 identifies the intraocular lens B, the process proceeds to OP307.

In OP307, the CPU 501 determines whether or not the magnitude of residual astigmatism calculated in OP303 for the intraocular lens B specified in OP306 is 0.35D or less. When the magnitude of residual astigmatism by the intraocular lens B is 0.35D or less (OP307: Yes), the CPU 501 advances the process to OP309. On the other hand, when the magnitude of residual astigmatism by the intraocular lens B is larger than 0.35D (OP307: No), the CPU 501 advances the process to OP308. Here, the magnitude of residual astigmatism of 0.35D used for the determination is an example, and the value may be changed as appropriate.

In OP308, the CPU 501 identifies the intraocular lens A specified in OP303 as an intraocular lens considered to be optimal for being inserted into the eyeball of a patient among the intraocular lenses of each model. Further, in OP 309, the CPU 501 specifies the intraocular lens B specified in OP 306 as an intraocular lens considered to be most suitable for being inserted into the eyeball of a patient among the intraocular lenses of each model. When the CPU 501 identifies an intraocular lens that is considered to be optimal as an intraocular lens to be inserted into the patient's eyeball in OP308 or OP309, the process proceeds to OP310.

In OP310, the CPU 501 determines the information of the intraocular lens specified by OP308 or OP309 (model name, magnitude of cylindrical refractive power on the toric surface, amount of reduction in corneal astigmatism, magnitude of residual astigmatism, axial angle of residual astigmatism, etc.). Is transmitted from the communication interface 504 to the information processing apparatus 10 via the network 40. Further, in the CPU 501, in addition to the information of the intraocular lens specified by OP308 or OP309, the information of the intraocular lens that becomes the second largest residual astigmatism after the magnitude of the residual astigmatism by the specified intraocular lens is also the information processing device 10. Send to. As described above, in addition to the intraocular lens considered to be optimal, the CPU 501 also transmits information on the intraocular lens that can be a candidate as an intraocular lens to be inserted into the eyeball of the patient to the information processing device 10. The CPU 501 also transmits the information of the intraocular lens of each model stored in the HDD 503 to the information processing device 10. In addition to the information on the intraocular lens considered to be optimal, which intraocular lens information is transmitted can be appropriately set. When the CPU 501 transmits the information of the intraocular lens to the information processing device 10, the processing of this flowchart ends.

FIG. 5 is a flowchart showing a process in which the CPU 101 of the information processing device 10 receives the information transmitted to the information processing device 10 by the process of the OP 310 and displays it on the monitor 20. In the OP 401, the CPU 101 receives the information of the intraocular lens transmitted to the information processing device 10 in the OP 310 via the communication interface 106. Then, in the OP 402, the CPU 101 generates a screen showing information about the intraocular lens to be inserted into the patient's eye based on the information input by the user in the OP 102 and the information received in the OP 401, and creates the generated screen. Displayed on the monitor 20.

FIG. 7 shows an example of the screen 2001 displayed on the monitor 20 in OP402. The screen 2001 provides a "preoperative information" section, an "insertion IOL" section, a "calculation result" section, a "toric model list" section, and a display area 2001a schematically showing an intraocular lens inserted into the eyeball and an incision position. Have.

In the "preoperative information" section, preoperative corneal astigmatism calculated based on the information input by the user in OP102 ("preoperative corneal astigmatism" column in the figure), induced astigmatism ("induced astigmatism" column in the figure), Postoperative corneal astigmatism (“Postoperative corneal astigmatism” column in the figure) The size and axial angle of each are displayed. In the "Insert IOL" section, the model name of the intraocular lens of each model transmitted from the server 50 to the information processing device 10 in OP401 ("Model" column in the figure) and the magnitude of the cylindrical refractive power on the toric surface (Fig.) Medium "IOL surface" column of "Cylindrical power"), reduction amount of corneal astigmatism ("Corneal surface" column of "Cylindrical power" in the figure), angle to align the marks in the weak main meridian direction attached to the intraocular lens ("IOL insertion angle" column in the figure) is displayed. In the "calculation result" section, the magnitude of residual astigmatism due to the intraocular lens of each model transmitted from the server 50 to the information processing device 10 in OP401 ("size" column of "postoperative astigmatism" in the figure) and residual astigmatism. The axial angle of astigmatism (“angle” column of “postoperative astigmatism” in the figure) is displayed. In the "Toric model list" section, the model name of the intraocular lens of each model ("model" column in the figure) stored in the HDD 503 of the server 50 transmitted from the server 50 to the information processing apparatus 10 in OP401, and the toric The magnitude of the cylindrical refractive power on the surface (“IOL surface” column in the figure) and the reduction amount of corneal astigmatism (“corneal astigmatism reduction amount” column in the figure) are displayed.

Further, in the display area 2001a, the position where the incision is created in the patient's eyeball and the insertion state of the intraocular lens are schematically displayed based on the information input by the user and the calculation result executed by the server 50. In FIG. 7, as an example, an intraocular lens 2001b schematically showing a state when inserted into the patient's eyeball and a position of an incision created in surgery are schematically shown in an image schematically showing the patient's right eye. The indicators 2001c are displayed so as to overlap each other. Further, in the display area 2001a, indexes indicating the axial angle of the intraocular lens (“0 °”, “45 °”, “90 °”, “135 °”, “180 °” in the figure) are also displayed. In the example of FIG. 7, in the front view of the patient's eye, the center of the eyeball is the origin, the direction horizontally extending to the right side of the screen is the 0 ° direction, and the angle measured counterclockwise from the 0 ° direction is the axial angle. The direction extending horizontally from the origin to the nasal side (“nose side” in the figure) may be the 0 ° direction, and the angle measured counterclockwise from the 0 ° direction may be the axial angle. At this time, when an intraocular lens is inserted into the eyeball of the patient's left eye (the user selects "left eye (OS)" in the "left and right eye" column on the screen 1001), the patient's left eye is modeled in the display area 2001a. The image shown is displayed, and the display positions of the "nasal side" and the "ear side" are exchanged. The 0 ° direction may be changed and displayed as the left and right are switched, and the right side of the screen may always be displayed as the 0 ° direction.

In the example of FIG. 7, each of the prepared intraocular lenses is displayed in the "Toric model list" section, and among these intraocular lenses, the intraocular lens A or the intraocular lens B specified in OP308 or OP309 above. Information about this is displayed in the Optimal Model column 2001d in the "Insert IOL" section. In the case of FIG. 7, the information of the intraocular lens of the model “T5” is displayed in the optimum model column 2001d. Further, information on the magnitude and axial angle of residual astigmatism when the intraocular lens of the optimal model column 2001d is inserted into the patient's eyeball is displayed in the column corresponding to the optimal model column 2001d in the "calculation result" section ( In the figure, the "size" of "postoperative astigmatism" is displayed as "0.11D", and the "angle" of "postoperative astigmatism" is displayed as "90 °").

Further, the information regarding the intraocular lens whose reduction amount of corneal astigmatism is the second smallest after the reduction amount of corneal astigmatism of the intraocular lens displayed in the optimum model column 2001d is displayed in the candidate model column 2001e. Further, the information regarding the intraocular lens whose reduction amount of corneal astigmatism is the second largest after the reduction amount of corneal astigmatism of the intraocular lens displayed in the optimum model column 2001d is displayed in the candidate model column 2001f. Furthermore, an intraocular lens that does not exist in the available intraocular lenses (intraocular lenses in the "Toric Model List" section in the figure) but has a residual astigmatism size of 0D when inserted into the patient's eyeball. Information about the above is displayed in the virtual model column 2001g.

In the case of FIG. 7, the information on the intraocular lenses of the models “T4” and “T6” is displayed in the candidate model columns 2001e and 2001f, respectively. Since the information on the intraocular lenses in the candidate model columns 2001e and 2001f and the virtual model column 2001g is displayed side by side in the same manner as in the optimum model column 2001d, the user can compare the information on the intraocular lenses of each model. Can be done.

In this way, the user confirms the magnitude of the corneal astigmatism and the axis angle of the astigmatism input in OP102 on the screen 2001 illustrated in FIG. 7. In addition, the user can see postoperative corneal astigmatism, a list of available intraocular lenses, and potential intraocular lenses to be inserted into the patient's eyeball, calculated on screen 2001 based on each value entered. Also, check information about residual astigmatism when each intraocular lens is inserted, the position of the incision made in the eyeball, and the image of the state where the intraocular lens is inserted. Then, the user can specify the intraocular lens to be inserted into the eyeball of the patient based on the information displayed on the screen 2001.

Next, in the present embodiment, a process in which the information processing device 10 and the server 50 generate information on residual astigmatism based on information on the inserted intraocular lens and the eyeball of the patient will be described. The calculation using the angle deviation may be calculated before the operation is performed, but in the present embodiment, the case where the calculation is used after the operation is performed will be described. 8 to 10 show a flowchart of processing executed by the CPU 101 of the information processing apparatus 10 and the CPU 501 of the server 50 in the present embodiment.

In OP501, the CPU 101 of the information processing apparatus 10 expands the calculator program stored in the HDD 103 into the RAM 102 and starts it. When the CPU 101 starts the calculator program, it advances the process to OP502. In OP502, the CPU 101 of the information processing apparatus 10 receives user input of corneal information of the eyeball of the patient into which the intraocular lens is inserted and information regarding the insertion state of the intraocular lens. For example, the CPU 101 displays a screen for the user to input the information on the monitor 20 and accepts the user's input. FIG. 11 shows an example of the screen 3001 displayed by the CPU 101 in the OP 502.

Each information input by the user on the screen 3001 will be described. The screen 3001 displays a "corneal information" section, an "IOL specification" section, and a "postoperative state" section. In the "Corneal Information" section, the user enters information about the cornea of the patient's eye after the intraocular lens has been inserted. In the "Size" column and "Axial angle of weak main meridian" column of "Preoperative corneal astigmatism", the size of the patient's corneal astigmatism before the intraocular lens is inserted into the patient (an incision is made). And the axis angle of the weak main meridian are input respectively.

In the "pre- and post-surgery surface astigmatism" column, does the information on astigmatism on the posterior surface of the cornea of the patient's eyeball before the operation of inserting the intraocular lens into the patient's eyeball be used in the calculation of the postoperative astigmatism described below in this embodiment? This is a field in which the user selects whether or not to use it. When using the astigmatism information (select "Consider" in the figure), a field for inputting the magnitude and axial angle of the posterior corneal astigmatism is displayed. Similarly, in the "induced astigmatism" column, whether or not to use the information of the induced astigmatism in the patient's eyeball after the operation of inserting the intraocular lens into the patient's eyeball in the calculation of the postoperative astigmatism described below in this embodiment. This is a field for the user to select. When using the astigmatism information (select "Consider" in the figure), a field for entering the size of the astigmatism and the position of the incision (the angle based on the 0 ° direction above) is displayed. .. As an example, as an input method of the incision creation position, the upper incision (90 ° direction), the ear side incision (180 ° direction), and the strong main meridian direction (entered in the above "weak main meridian axis angle" field). The user may select a specific incision position (specific based on the value), or the user may input an arbitrary angle.

The "IOL Specifications" section is for the user to select a model of an intraocular lens inserted into the patient's eyeball. As an example, in the "Toric Model" column of the "IOL Specifications" section, the user selects one of the available intraocular lens models stored in the HDD 503 of the server 50. Further, the "angle deviation" column of the "postoperative state" section is a column in which the user inputs the deviation from the optimum position in the axial angle of the intraocular lens inserted into the patient's eyeball. The user uses the position of the intraocular lens assumed before insertion into the patient's eyeball (for example, the position of the toric mark attached to the intraocular lens indicating the direction of the weak main meridian. The intraocular lens illustrated in FIG. 7). In the case of, a mark in which two points attached to the edge of the optical part are lined up. Also called a guide mark. The form of the mark is not limited to the point) and the position of the actually inserted intraocular lens. Enter the angle in the "Angle deviation" field based on the deviation.

Next, in OP503, the CPU 101 determines whether or not the user has instructed to execute the calculation of the information regarding the astigmatism of the patient's eyeball after the operation based on the above input value. In the case of the example shown in FIG. 11, specifically, it is determined whether or not the user has performed an operation such as pressing or clicking on the button 3001a for performing the calculation displayed on the screen 3001. When the user gives an instruction to execute the calculation (OP503: Yes), the CPU 101 advances the process to OP503. On the other hand, when the operation of the button 3001a by the user has not occurred (OP503: No), the CPU 101 repeats the process of OP502. In OP504, the CPU 101 transmits various information input to the user in the process of FIG. 8 to the server 50. When the CPU 101 transmits the information to the server 50, the CPU 101 ends the process of this flowchart.

Next, the process executed by the CPU 501 of the server 50 following the process of FIG. 8 will be described with reference to the flowchart of FIG. By the process of FIG. 9, astigmatism information in the patient's eyeball after the operation is generated based on the information of the patient's eyeball input by the user.

In OP601, the CPU 501 receives the information of the patient's eyeball input by the user by the process of FIG. 8 in the information processing apparatus 10. Next, the CPU 501 advances the process to OP602. In OP602, the CPU 501 generates information on corneal astigmatism after surgery for inserting an intraocular lens into the patient based on the information on the eyeball of the patient received in OP601. The information generated includes the magnitude of residual astigmatism. Next, the CPU 501 advances the process to OP603.

In the present embodiment, the Randold ring corresponds to the combination of the magnitude of the residual astigmatism calculated in OP602 and the magnitude of the angle input in the “angle deviation” column of the “postoperative state” section of the screen 3001 of FIG. The image of the result of optically simulating the image is stored in the HDD 503 in advance. FIG. 13 is an example showing the correspondence between the images of the simulation results when the intraocular lens displayed as the model “T5” in the “Toric model list” section of the screen 2001 of FIG. 7 is inserted into the eyeball of the patient. As shown in FIG. 13, the range of the magnitude of the angle deviation (unit: deg) is "0 or more and less than 2.5", "2.5 or more and less than 7.5", and "7.5 or more and less than 12.5". An image corresponding to a combination of a range of magnitude (unit: D) of residual astigmatism "0 or more and less than 0.25", "0.25 or more and less than 0.75", and "0.75 or more and less than 1.25" ( In the figure, "T5-0-0 deg" to "T5-10-10 deg") are stored in the HDD 503. As described above, the HDD 503 stores an image of the simulation result corresponding to the combination of the magnitude of the angle deviation and the magnitude of the residual astigmatism for each intraocular lens of the usable model. The number of images corresponding to each combination is not limited to one, and for example, different images may be prepared according to the visual acuity assumed in the eyeball of the postoperative patient.

Therefore, in OP603, the CPU 501 includes the magnitude of residual astigmatism included in the information generated in OP602 and the "Toric" in the "IOL Specifications" section of screen 3001 of FIG. 11 included in the information of the patient's eyeball received in OP601. Based on the model name entered in the "Model" field and the magnitude of the angle entered in the "Angle deviation" field in the "Postoperative state" section, an image of the corresponding simulation result is acquired. Next, in OP 604, the CPU 501 transmits the information generated in OP 602 and the image acquired in OP 603 to the information processing apparatus 10 as result information, and ends the processing of this flowchart.

FIG. 10 is a flowchart showing a process in which the CPU 101 of the information processing device 10 receives the information transmitted to the information processing device 10 by the above-mentioned processing of OP 604 and displays it on the monitor 20. In the OP 701, the CPU 101 transmits the information regarding the postoperative residual astigmatism transmitted to the information processing device 10 in the OP 604 and the image of the simulation result corresponding to the intraocular lens inserted in the patient's eye via the communication interface 106. Receive. Then, in the OP 702, the CPU 101 generates a screen showing the astigmatism information of the patient's eyeball after the operation based on the information input by the user in the OP 502 and the information received in the OP 701, and displays the generated screen on the monitor 20. To do.

FIG. 12 shows an example of the screen 4001 displayed on the monitor 20 in OP702. The screen 4001 has a "calculation result" section and a display area 4001a for displaying an image of the above simulation result.

In the "Calculation Results" section, the magnitude and axial angle of postoperative corneal astigmatism calculated in OP602 (each value in the "size" and "angle" columns of "postoperative corneal astigmatism"), and the user in OP502 The input intraocular lens model (“model name” column of “toric model”), the magnitude of the columnar refractive force on the toric surface of the intraocular lens included in the information generated in OP602, and the amount of reduction in corneal astigmatism (“toric model”). The "IOL surface" column and the "Corneal astigmatism reduction amount" column of "Cylindrical frequency" are displayed.

Further, in the "calculation result" section, the weakness with respect to the above 0 ° direction at the optimum position when the intraocular lens of the model input by the user in OP502 is inserted into the eyeball of the patient, which is calculated in OP602. The angular direction of the main meridian (“optimal angle” column of “Toric IOL insertion angle”), the angular direction of the weak main meridian based on the above 0 ° direction at the actual position of the intraocular lens inserted into the patient's eyeball. ("Fixed angle" column of "Toric IOL insertion angle"), the magnitude of the angle deviation input by the user in OP502 ("Angle deviation" column of "Toric IOL insertion angle") is displayed. Further, in the "calculation result" section, the magnitude and axial angle of residual astigmatism calculated in OP602 ("size" column and "angle" column of "postoperative astigmatism") are displayed. Here, the angular direction of the weak main meridian at the optimum position coincides with the angular direction of the strong main meridian indicated by the composite vector of the vector based on the preoperative corneal astigmatism, the anterior-posterior surface astigmatism, and the induced astigmatism input by the user in OP502. It is the direction to do. Further, the angular direction of the weak main meridian at the actual position is a direction reflecting the above-mentioned angular deviation in the angular direction of the weak main meridian at the above-mentioned optimum position.

Further, in the display area 4001a, an image of the simulation result acquired in OP603 is displayed. In the screen 4001 illustrated in FIG. 12, as an example, in OP603, an image of the simulation result of the Randold ring having a visual acuity of about 0.5 (“0.5 equivalent” in the figure) and the visual acuity of about 1. An image of the simulation result of the Randold ring corresponding to 0 (“1.0 equivalent” in the figure) is acquired, and each image is displayed in the display area 4001a.

In this way, the user can confirm the information regarding the postoperative residual astigmatism together with the simulation result from the information regarding the insertion state of the cornea of the patient's eyeball and the inserted intraocular lens input in OP502. As a result, the user can predict the visual function of the eyeball of the patient into which the intraocular lens is inserted after the operation, and can intuitively image the visual function based on the simulation result.

The above is the description of the present embodiment, but the configuration and processing of the information processing device 10 and the like are not limited to the above embodiment, and are within the range that does not lose the same as the technical idea of the present invention. Various changes can be made in. For example, in the above embodiment, as long as the above screen is displayed on the monitor 20, the process executed by the server 50 may be executed by the information processing device 10, and the process executed by the information processing device 10 may be executed. It may be executed on the server 50. Further, various data stored in the HDD 503 may be stored in the HDD 103, and the CPU 101 may execute the process executed by the CPU 501 using the data stored in the HDD 103.

Further, the above embodiment may be modified as follows, for example.

<First modification>
FIG. 14 is a diagram showing a modified example of the display area 1001f displayed on the screen 1001 of FIG. In the first modification, when the "right eye" button or the "left eye" button is pressed in the "left and right eye" column displayed on the screen 1001 illustrated in FIG. 6, the target eye is specified, which is shown in FIG. In the display area 1001f, the eye image 1001g is displayed in a light color on the background of the indexes 1001a and 1001b. This eye image 1001g is an image simulating the patient's eye, and is drawn using image data obtained by photographing the eyes of an existing model, image data created by CG (Computer Graphics), and various other image data. .. The image data of the eye image 1001 g is prepared in advance as a part of the calculator program, is expanded in the RAM 102 when the CPU 101 executes the calculator program, is referenced while the CPU 101 is executing the calculator program, and is referenced by the monitor 20. It is used as a part of the data for the screen 1001 displayed on the screen.

If the eye image 1001g is displayed in the display area 1001f, the user can intuitively grasp the distinction between the left and right of the target eye. Therefore, according to the first modification, it is possible to reduce the input error of the user. Further, since the eye image 1001g displayed in the display area 1001f is displayed in a lighter color than the indexes 1001a and 1001b, the display itself of the indexes 1001a and 1001b is not hindered.

In FIG. 14, the image of the right eye is illustrated as the eye image 1001 g, but if the "left eye" button is pressed in the "left and right eye" column, the image of the left eye is displayed. Further, in FIG. 14, the eye image 1001g is displayed in a lighter color than the indexes 1001a and 1001b, but any display form may be used as long as it does not interfere with the display of the indexes 1001a and 1001b. .. Examples of such a display form include a line drawing simulating the shape of an eye.

<Second modification>
In the above embodiment, as shown in FIG. 7, a mark schematically indicating the incision position is displayed on the screen 2001, but the mark indicating the incision position is displayed in the display area 1001f of the screen 1001 illustrated in FIG. It may be displayed. That is, as shown in FIG. 14 showing a modified example of the display area 1001f of the screen 1001, the mark 1001m indicating the incision position is displayed at a position corresponding to the value input in the “incision position” field. You may.

In this second modification, the mark 1001m indicating the incision position is displayed at a position corresponding to the value input in the “incision position” field. Therefore, in the second modification, if an erroneous value is input in the "incision position" field, the mark 1001m indicating the incision position is displayed at the position corresponding to the erroneous value. As a result, the user can visually grasp the erroneous input at the position of the mark 1001 m. Therefore, in the second modification, it is possible to reduce erroneous input in the "incision position" column.

<Third modification example>
In the above embodiment, as shown in FIG. 6, bars 1001c and 1001d have been exemplified, but the bars that visually indicate the magnitude of the value in this way have the magnitude and weakness of the refractive power in the strong main meridian direction. The form is not limited to the form indicating the magnitude of the refractive power in the main meridian direction.

FIG. 15 is a diagram showing a modified example of the screen 1001 of FIG. As the bars visually indicating the magnitude of the value, for example, as shown in FIG. 15, the bar 1001h indicating the axial angle in the weak main meridian direction, the bar 1001i indicating the axial angle in the strong main meridian direction, and the induced astigmatism Examples include a bar 1001j indicating the size and a bar 1001k indicating the incision position. Like the bars 1001c and 1001d, these bars 1001h, 1001i, 1001j, and 1001k enable display of bars and numerical input by moving a slider provided on each bar. In the case of this third modification, not only the magnitude of the refractive power in the strong main meridian direction and the magnitude of the refractive power in the weak main meridian direction, but also other values can be displayed by the bar and numerically input by moving the slider. This makes it possible to save the trouble of visually grasping the magnitude of each value and switching the input method from mouse operation to numeric keypad input. In addition, it is possible to realize a high affinity with a tablet terminal or the like that is premised on operation with a touch panel.

<Fourth modification>
In the above embodiment, since the refractive power in the weak main meridian direction and the refractive power in the strong main meridian direction are numerically input on the screen 1001, the user may input erroneously. Therefore, in the fourth modification, in order to suppress erroneous input of the refractive power in the weak main meridian direction and the refractive power in the strong main meridian direction, a warning is displayed when the magnitude relation of the values is inconsistent. FIG. 16 is a diagram showing an example of a warning display. In the fourth modification, for example, when the button 1001e is pressed while the value input as the refractive power in the weak main meridian direction is larger than the value input as the refractive power in the strong main meridian direction, the value is large or small. A warning display 1001n indicating that the relationship is inconsistent is displayed. Therefore, for example, when the value of the refractive power in the weak main meridian direction and the value of the refractive power in the strong main meridian direction are erroneously input in reverse, the warning display 1001n is displayed when the button 1001e is pressed. Therefore, the user can grasp the erroneous input of the refractive power in the weak main meridian direction and the refractive power in the strong main meridian direction. The same applies when the radius of curvature is erroneously input instead of the refractive power.

The button 1001p is displayed on the warning display 1001n in FIG. The button 1001p is a button for exchanging the value of the refractive power of the weak main meridian and the value of the refractive power of the strong main meridian. When the value input as the refractive power in the weak main meridian direction is larger than the value input as the refractive power in the strong main meridian direction, the value of the refractive power in the weak main meridian direction and the value of the refractive power in the strong main meridian direction Is likely to have been entered in reverse. Therefore, if the warning display 1001n is provided with a button 1001p for exchanging the value of the refractive power of the weak main meridian with the value of the refractive power of the strong main meridian, the user can refract the weak main meridian simply by pressing the button 1001p. It is possible to correct the value of the force and the value of the refractive power of the strong main meridian, and there is no need to input the values again. Therefore, it is convenient for the user.

<Fifth modification>
In the above embodiment, as shown in FIG. 7, in order to be able to distinguish whether the eye image displayed in the display area 2001a of the screen 2001 is the right eye or the left eye, the "right eye" is placed on the upper part of the eye image. Was displayed, the word "ear side" was displayed on the left side of the eye image, and the word "nasal side" was displayed on the right side of the eye image. When the eye displayed in the eye image on the screen 2001 is the left eye, the characters "left eye" are displayed at the upper part of the eye image, and the characters "nasal side" are displayed on the left side of the eye image. The word "ear side" was displayed on the right side of the image. However, the display for identifying whether the eye displayed in the display area 2001a is the right eye or the left eye is not limited to the display of such characters.

FIG. 17 is a diagram showing a modified example of the screen 2001 of FIG. In the modified example of the screen 2001 shown in FIG. 17, in order to make it easier to distinguish whether the eye image displayed in the display area 2001a is the right eye or the left eye, the “right eye” and the “ear side” are used. Next to the word "nose side", images schematically representing the meaning and content of the character are displayed. That is, in the modified example of the screen 2001 shown in FIG. 17, an image 2001h of a line diagram of a face in which the right eye portion is surrounded by a rectangular frame is displayed next to the character “right eye”. In addition, the image 2001i of the line diagram of the ear is displayed next to the character "ear side". In addition, an image 2001j of a diagram of the nose is displayed next to the characters "nose side". If the eye image displayed in the display area 2001a is the left eye, the images 2001h, 2001i, and 2001j are displayed symmetrically.

In the fifth modification, the user can more intuitively grasp whether the eye image displayed in the display area 2001a is the right eye or the left eye. Therefore, in the fifth modification, it is possible to prevent the user from misidentifying whether the eye image displayed in the display area 2001a is the right eye or the left eye.

In the modified example of the screen 2001 shown in FIG. 17, the button 2001k described as "upside down" is displayed on the lower side of the display area 2001a. This button 2001k is a button for rotating the display of the display area 2001a by 180 degrees. In surgery, the relative position of the operator with respect to the patient's eye depends on where the incision is made. Therefore, if the button 2001k for rotating the display of the display area 2001a by 180 degrees is displayed on the screen 2001, the user can see the image of the display area 2001a in a state closer to the image at the time of surgery.

<6th modification>
In the modified example of the screen 2001 shown in FIG. 17, the button 2001k described as "upside down" was displayed below the display area 2001a, but the display of the display area 2001a is rotated 180 degrees on the screen 2001. Not only the button but also the button for rotating the display at other angles may be displayed.

FIG. 18 is a diagram showing a modified example of the button 2001k. In this modification, instead of the button 2001k described as "upside down" displayed below the display area 2001a in FIG. 17, the button 2001m described as "upper incision" and the "ear side incision" are used. The button 2001n described as "front view" and the button 2001p described as "front view" are displayed. Like the button 2001k, the button 2001m is a button for rotating the display of the display area 2001a by 180 degrees. On the other hand, the button 2001n is a button for rotating the display of the display area 2001a so that the ear side is arranged downward. Further, the button 2001p is a button for restoring the display of the display area 2001a. If a plurality of buttons for rotating the display of the display area 2001a are provided in this way, the user can view the image of the display area 2001a in a state closer to the image at the time of surgery.

In FIG. 18, the display of the display area 2001a is shown in a state of being rotated by 180 degrees.

<7th modification>
The screen 3001 shown in FIG. 11 has a screen configuration on the premise that postoperative astigmatism is calculated from the preoperative corneal information and the magnitude of the angle deviation of the intraocular lens after the operation. From the postoperative corneal astigmatism and residual astigmatism, the function to calculate the angle at which the intraocular lens should be rotated to minimize the postoperative residual astigmatism, and from the preoperative corneal information and postoperative residual astigmatism. An input field may be provided to realize a function of calculating the angle at which the intraocular lens should be rotated in order to minimize the residual astigmatism after surgery.

19 to 21 show a modified example of the screen 3001 of FIG. FIG. 19 shows a first display state of a modified example of the screen 3001 of FIG. Further, FIG. 20 shows a second display state of a modified example of the screen 3001 of FIG. Further, FIG. 21 shows a third display state of the modified example of the screen 3001 of FIG. In the seventh modification, as shown in FIGS. 19 to 21, three radio buttons are displayed in the "function selection" column of the screen 3001. The first radio button is a button selected by the user when calculating postoperative astigmatism from the preoperative corneal information and the magnitude of the angle deviation of the intraocular lens after the operation. The second radio button is a button selected by the user when calculating the angle at which the intraocular lens should be rotated to minimize postoperative residual astigmatism from postoperative corneal astigmatism and residual astigmatism. is there. The third radio button is selected by the user to calculate the angle at which the intraocular lens should be rotated to minimize postoperative residual astigmatism from preoperative corneal information and postoperative residual astigmatism. It is a button to do. The three radio buttons displayed in the "function selection" field are alternatives, and two or more radio buttons cannot be selected at the same time.

In this seventh modification, three input fields prepared on the screen 3001 are a "corneal information" section, a "toric" section, and a "postoperative residual eyeball residual astigmatism" section. The "Corneal Information" section has four subsections: "Preoperative anterior corneal astigmatism", "Induced astigmatism", "Anterior-postoperative corneal astigmatism", and "Postoperative corneal astigmatism". In addition, the "Toric" section has two subsections, a "Toric model" section and an "Angle deviation" section.

Then, in the function corresponding to the first radio button, that is, the function of calculating postoperative astigmatism from the preoperative corneal information and the magnitude of the angle deviation of the intraocular lens after surgery, "postoperative corneal astigmatism" Information on "postoperative residual eyeball astigmatism" is unnecessary. In addition, the function corresponding to the second radio button, that is, the function of calculating the angle at which the intraocular lens should be rotated in order to minimize the postoperative residual astigmatism from the postoperative corneal astigmatism and residual astigmatism. Information on "preoperative anterior corneal astigmatism", "induced astigmatism", "anterior-postoperative corneal astigmatism", "toric model", and "angle deviation" is unnecessary. In addition, the function corresponding to the third radio button, that is, the calculation of the angle at which the intraocular lens should be rotated in order to minimize the postoperative residual astigmatism from the preoperative corneal information and the postoperative residual astigmatism. Information on "postoperative corneal astigmatism," "toric model," and "angle shift" is not required for the functions to be performed. Therefore, in the seventh modification, the screen 3001 is configured so that the sections that do not need to be input are grayed out and cannot be input according to the selection state of the three radio buttons in the "function selection" field. ..

For example, when the first radio button is selected, as shown in FIG. 19, the "corneal information" section and the "toric" section are ready for input, and the other sections are grayed out and cannot be input. It becomes a state. In addition, of the four subsections in the "corneal information" section, three subsections, "preoperative anterior corneal astigmatism", "induced astigmatism", and "anterior-postoperative corneal astigmatism", can be input. , The "Postoperative corneal astigmatism" section is grayed out and cannot be entered.

Further, for example, when the second radio button is selected, as shown in FIG. 20, the "postoperative corneal astigmatism" section and the "postoperative eyeball residual astigmatism" section can be input, and other Sections are grayed out and cannot be entered.

Also, for example, when the third radio button is selected, as shown in FIG. 21, the "preoperative anterior corneal astigmatism" section, the "induced astigmatism" section, the "anterior-postoperative surface corneal astigmatism" section, and the "preoperative anterior corneal astigmatism" section The "Postoperative ocular residual astigmatism" section is ready for input, and the other sections are grayed out and cannot be entered.

In this seventh modification, one of the three radio buttons displayed in the "function selection" field of the screen 3001 is selected, an appropriate value is input in the input field of each section, and the button 3001a is pressed. Then, as in the above embodiment, the processing of OP504 is executed, the information is sent from the information processing apparatus 10 to the server 50, and the server 50 executes a series of processing from OP601 to OP604. Then, the information processing device 10 executes a series of processes from OP701 to OP702, so that the screen of the calculation result is displayed on the monitor 20 of the information processing device 10.

FIG. 22 is a diagram showing an example of a screen of the calculation result. In this seventh modification, when the button 3001a is pressed on the screen 3001, the calculation result is displayed under the button 3001a. In this seventh modification, the "postoperative corneal astigmatism" section, the "toric" section, and the "postoperative eyeball residual astigmatism" section are prepared in the calculation result display column. Then, for example, when the button 3001a is pressed with the first radio button selected in the "function selection" column, the size and axial angle of the "postoperative corneal astigmatism" section and the "postoperative eyeball residual astigmatism" The section size and axis angle are highlighted. Further, for example, when the button 3001a is pressed with the second radio button selected in the "function selection" column, the astigmatism reduction amount and the required correction angle in the "toric" section are highlighted. Further, for example, when the button 3001a is pressed with the third radio button selected in the "function selection" column, the size and angle of the "postoperative corneal astigmatism" section and the astigmatism reduction in the "toric" section are reduced. The amount and required correction angle are highlighted.

画面３００１における入力が上記のようなベクトルで定義される場合、ボタン３００１ａを押した場合にボタン３００１ａの下に表示される計算結果の表示欄の各値は、数６に示す各式に従って算出される。

In the seventh modification, the server 50 performs calculations using, for example, the following mathematical formulas. For example, the input on the screen 3001 is defined by the vector shown in Equation 5.

When the input on the screen 3001 is defined by the vector as described above, each value in the calculation result display column displayed under the button 3001a when the button 3001a is pressed is calculated according to each formula shown in Equation 6. To.

In the seventh modification, the data input field displayed on the screen 3001 is grayed out according to the selection state of the three calculation functions displayed in the "function selection" field, and cannot be input. Therefore, it is easy to grasp the input fields that do not require input, which are different for each calculation function. Further, since the input field itself is grayed out, it is easier to grasp the input field that does not require input as compared with the case where only the characters displayed in the input field are grayed out. Further, since it is easy to grasp the input field that does not require input, it is also easy to grasp whether or not the calculation function desired by the user is appropriately selected from the three calculation functions. Although an example of function selection using a radio button has been described here, a button (push button) with a function name may be arranged instead of the radio button. In this case as well, it is an alternative type, and two or more buttons cannot be selected at the same time.

<Computer readable recording medium>
A computer or other machine or device (hereinafter referred to as a computer or the like) can record a management tool for setting the information processing device or server, a program for realizing an OS or the like on a recording medium readable by the computer or the like. Then, the function can be provided by causing a computer or the like to read and execute the program of this recording medium. Here, the computer is, for example, an information processing device, a server, or the like.

Here, a recording medium that can be read by a computer or the like is a recording medium that can store information such as data and programs by electrical, magnetic, optical, mechanical, or chemical action and can be read from the computer or the like. To say. Among such recording media, those that can be removed from a computer or the like include, for example, a memory such as a flexible disk, a magneto-optical disk, a CD-ROM, a CD-R / W, a DVD, a Blu-ray disk, a DAT, an 8 mm tape, or a flash memory. There are cards etc. In addition, there are hard disks, ROMs, and the like as recording media fixed to computers and the like.

The design device may be applied to a single focus lens. For example, when the difference between the refractive power of the weak main meridian and the refractive power of the strong main meridian is less than 0.5D, or when the magnitude of the combined vector of corneal astigmatism, induced astigmatism, and posterior astigmatism is less than 0.5D, A single focus lens may be displayed as a result on a screen showing information about an intraocular lens to be inserted into the patient's eye illustrated in FIG. Here, the difference in refractive power of 0.5D and the magnitude of the composite vector of 0.5D are examples and can be set arbitrarily.

10 Information processing device 20 Monitor 30 Input device 101 CPU
103 HDD
50 server 501 CPU
503 HDD
40 networks

Claims (18)

A display unit that displays a screen that accepts user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
Based on the received user input, a display control unit that controls the display unit to display a first index whose magnitude changes according to the magnitude of the refractive power in the strong main meridian direction on the screen.
An intraocular lens design device characterized by having. The screen is a screen that also accepts user input of information regarding the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
The display control unit controls the display unit so as to display a second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction on the screen.
The device for designing an intraocular lens according to claim 1. The design of the intraocular lens according to claim 2, wherein the display control unit controls the display unit so that the first index and the second index are displayed in different graphic designs. apparatus. The claim is characterized in that the display control unit controls the display unit so as to display the first index and the second index in a region adjacent to an input position of the user input on the screen. 3. The device for designing an intraocular lens according to 3. The screen is a screen that also accepts user input of information regarding the magnitude of the angular deviation of the intraocular lens inserted into the eyeball.
Any of claims 1 to 4, wherein the display control unit controls the display unit so as to display information regarding residual astigmatism of the eyeball after surgery calculated based on the magnitude of the angle deviation. The device for designing an intraocular lens according to item 1. The display control unit controls the display unit to display information about an intraocular lens in which the magnitude of residual astigmatism when inserted into the eyeball is 0, which is specified based on the received user input. The intraocular lens design device according to any one of claims 1 to 5, wherein the intraocular lens is designed. When the user input is the radius of curvature of the cornea and the corneal refractive power, the display control unit controls the display unit so as to display the refractive power calculated using the radius of curvature and the corneal refractive power. Then, when the user input is the refractive power of the cornea and the refractive power of the cornea, the display unit is controlled so as to display the radius of curvature calculated by using the refractive power and the refractive power of the cornea. The device for designing an intraocular lens according to any one of claims 1 to 6, which is characterized. The eye according to any one of claims 1 to 7, wherein the display unit displays a screen that receives user input of information related to the size by operating a slider or a button that increases or decreases a value. Inner lens design device. When the received user input is defined by the following vector, the display unit

The design of an intraocular lens according to any one of claims 1 to 8, wherein the display unit is controlled so as to display a calculation result calculated according to the following mathematical formulas (1) to (3). apparatus.

The display control unit controls the display unit so as to display an eye image on the background of the first index based on the received user input.
The intraocular lens design device according to any one of claims 1 to 9, wherein the intraocular lens is designed. The display unit of the information processing device displays a screen that accepts user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
The display control unit of the information processing device displays on the screen a first index whose magnitude changes according to the magnitude of the refractive power in the strong meridian direction based on the received user input. Control the display,
A method of designing an intraocular lens. The screen is a screen that also accepts user input of information regarding the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
The display control unit controls the display unit so as to display a second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction on the screen.
The method for designing an intraocular lens according to claim 11. The design of an intraocular lens according to claim 12, wherein the display control unit controls the display unit so that the first index and the second index are displayed in different graphic designs. Method. The claim is characterized in that the display control unit controls the display unit so as to display the first index and the second index in a region adjacent to an input position of the user input on the screen. 13. The method for designing an intraocular lens according to 13. On the computer
A process of displaying a screen on the display unit of the computer for receiving user input of information on the magnitude of the refractive power in the strong main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
Based on the received user input, a process of controlling the display unit to display a first index whose magnitude changes according to the magnitude of the refractive power in the strong main meridian direction on the screen is executed. Intraocular lens design program for. The screen is a screen that also accepts user input of information regarding the magnitude of the refractive power in the weak main meridian direction in the cornea of the eyeball into which the intraocular lens is inserted.
Further, the computer is made to execute a process of controlling the display unit so as to display on the screen a second index whose magnitude changes according to the magnitude of the received refractive power in the weak main meridian direction.
The intraocular lens design program according to claim 15, wherein the intraocular lens is designed. The intraocular lens according to claim 16, further comprising causing the computer to execute a process of controlling the display unit so that the first index and the second index are displayed in different graphic designs. Lens design program. The computer is further characterized in that it executes a process of controlling the display unit so as to display the first index and the second index in a region adjacent to the input position of the user input on the screen. 17. The design program for an intraocular lens according to claim 17.

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