JP3004583B2 - Subjective optometry device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry apparatus, and more particularly, to an optometry apparatus which displays an eyesight value obtained by another measurement so that an examiner can refer to the value.

[0002]

2. Description of the Related Art In a visual acuity test using an optometric apparatus, measured visual acuity values are displayed for the left and right eyes, but a plurality of different tests such as a corrected visual acuity test, a prescription power visual acuity test, a naked eye acuity test, and a near vision acuity test. When performing tests, it was not possible to display visual acuity values from one test during another test. In addition, visual acuity values obtained from external devices such as a refractometer with a consciousness and a personal computer were not regarded as important because the test state and test time were different or unknown.

[0003]

[Problems to be solved by the present invention] However, even if the examination status and examination time are different, by referring to other data, for example, a new visual acuity value with eyeglasses used previously can be obtained. It is possible to balance with the eyesight value of the glasses that are going to be balanced, to be able to balance the left and right eyesight values, to change the examination procedure, to change the set power of the optometer, to perform an efficient examination, It is possible to estimate the current visual acuity value to be examined. Nevertheless, the current optometry apparatus does not have a function of displaying the above data that is effective for the examiner. The present invention has been made in view of such a problem of the conventional optometry apparatus, and displays an effective data for a visual acuity test to easily perform an accurate visual acuity value measurement in a short time. It is intended to provide a device.

[0004]

The present invention provides a naked eye visual acuity value by naked eye inspection,
At the same time, the visual acuity value of the subject's eye when corrected by the refractive power obtained by the objective, and the visual acuity value of the subject's eye when corrected by the refractive power obtained by the refractive power measurement by the lens meter of the spectacle wearing lens. This is a subjective optometry apparatus provided with a display device for displaying.

[0005]

According to the present invention, a display device for simultaneously displaying a visual acuity value of a subject's eye during a subjective measurement and a visual acuity value of the subject's eye when corrected based on refractive power input from the outside. A subjective optometric apparatus is provided. This will provide useful data for subjective vision tests,
That is, the visual acuity value of the subject's eye during the subjective measurement and the visual acuity value of the subject's eye when corrected based on the refractive power input from the outside are displayed, and a more accurate subjective visual acuity measurement can be performed in a short time. It can be carried out. As a result, we know the difference between the eyesight value of the eyeglasses used previously and the eyesight value of the eyeglasses we are trying to make new, and if there is a difference, balance according to the degree, or adjust the left and right eyesight values Allows you to balance. Furthermore, there is an effect that the examination can be changed, the examination can be performed efficiently by changing the set frequency of the optometry apparatus, and the current visual acuity value to be examined can be estimated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an optometry apparatus according to the present invention will be described below with reference to the drawings. The optometric apparatus controls the optometric operation by storing the optometric optometer 1, the chart projector 30, the screen 50, the driving circuit 60 for controlling the optometric optometer 1 and the chart projector 30, and an optometric program. An optometry program control device 70, a display 72 connected to the optometry program control device 70, and an operation unit 80 and a printer 82 also connected to the optometry program control device 70. Display 72
Is required in the optometry procedure described below, for example, in the R & G test, an examination instruction for the subject such as "Which look better with the red and green optotypes?" A key to be operated by the examiner is displayed in response to the examinee's response such as "green ... +, same ... YES". The subjective optometer 1 is disposed in front of the subject's eye E and is capable of electrically switching an optical function. The optometer 1 is a spherical lens plate 4 rotatably mounted on a shaft 2.
And an auxiliary optical member plate 6. The spherical lens plate 4
Spherical lenses 8 having different refractive powers are respectively arranged in a plurality of circular holes provided near the outer periphery.
The desired spherical lens 8 can be arranged on the visual axis 16 of the eye E by driving the gear 14 attached to the rotating shaft 12 and meshing with the gear teeth on the outer periphery of the spherical lens plate 4.

The auxiliary optical member plate 6 has a plurality of circular holes provided near the outer periphery, for example, a cross cylinder, a red filter,
A green filter and a polarizing filter 18 are arranged, and the desired auxiliary optical member 18 is covered by the operation of the pulse motor 20 and the gear 24 meshing with the gear teeth on the outer periphery of the auxiliary lens plate 6 attached to the rotating shaft 22. It can be arranged on the visual axis 16 of the optometry E. The optometry apparatus is further provided with a cylindrical lens plate, a cross cylinder lens, a rotary prism, and the like. The cylindrical lens, the cross cylinder, and the rotary prism attached to each can be arbitrarily positioned on the visual axis 16. Chart projector 30
Is a chart plate 34 rotatably attached to the shaft 32.
In a plurality of circular holes provided near the outer periphery of the chart plate 34, visual acuity test indices C as shown in FIG. 2, that is, C01: visual acuity (0.6 to 0.9) chart C02: Visual acuity (0.9 to 2.0) chart C03: Crosshair chart C04: Visual acuity (0.5 to 1.0) chart C05: Binocular balance chart C06: Cross oblique chart C07: Non-uniform image visual chart C08: Stereoscopic chart C09: fusion width chart C10: horizontal fusion width chart C11: vertical fusion width chart C12: Landolt (0.3-0.5) chart C13: Landolt (0.6-0.9) chart C14 : Landolt (1.0 to 2.0) chart C15: Crosshair chart is arranged.

A gear 40 attached to a rotating shaft 38 of a step motor 36 meshes with a gear tooth provided on the outer periphery of the chart plate 34. A chart projection optical system 48 is formed by the light source lamp 42, the condenser lens 44, and the projection lens 46, and an arbitrary visual acuity test target C is arranged on the optical axis 49 of the chart projection optical system 48 by driving the step motor 36. be able to. Drive circuit 6
0 is a step motor 10, 20, 36, light source lamp 4
4 to control the driving and lighting of each. The optometry program control device 70 connected to the drive circuit 60
An optometry program, for example, an R / G test, a CC (A) test, a CC (P) test, a binocular balance (polarization), a binocular balance (prism), a power adjustment, a cross-oblique test, a von Gray fetest, a stereo vision test A character test is created, and a combination of each program and a desired visual acuity test target C is accumulated.

The display 72 connected to the optometry program control circuit 70 displays the name of the optometry program being executed by the optometry program control circuit 70, and the operation to be performed next by the operator. Further, when the measured visual acuity value or the visual acuity value input from another device (for example, a refractometer with consciousness) is corrected based on the item-by-item (for example, the naked eye acuity value, the refractive power obtained by the objective), (The visual acuity value of the eye to be examined when corrected based on the refractive power of the wearing glasses obtained by the lens meter), and the visual acuity value for each item is simultaneously displayed for each item. The screen 50 has the visual axis 16 and the optical axis 4
9 is disposed orthogonal to the visual axis 49 at the intersection. Printer 8
Reference numeral 2 prints items specifying the subject, preliminary input data, measured values, and the like. Next, the operation of the optometry apparatus having the above configuration will be described. First, the operation of the program optometry is shown in FIG.
As shown in the figure, in step S1, the power switch 1
01 is turned on, and it is determined whether or not to register the chart in step S2. If the chart is not registered, it is determined in step S3 whether an optometry program is to be created. If a program is not created, it is determined in step S4 whether or not to perform optometry.
If the measurement is not performed, the power switch 101 is turned off in step S5, and the operation of the program optometry ends.

When chart registration is performed in step S2, the chart registration switch 102 is turned on in step S6, and the process proceeds to step S7. Step S7
In step, the type and arrangement order of the visual acuity test optotypes C mounted on the chart projector 30 are registered, and
Proceed to 2. The procedure for registering the types and the arrangement order of the visual acuity test targets C will be described later in detail. It should be noted that a non-projection type chart may be similarly registered instead of the chart projector 30. If it is determined in step S3 that an optometry program is to be created, the program creation switch 104 is turned on in step S8, and an optometry program is created in step S10. The procedure for creating the optometry program will be described later in detail.
After creating the optometry program, the process proceeds to step S2. In step S4, when it is determined that the optometry is to be measured, it is determined whether or not to input preliminary data such as the refractive power obtained by the refractometer and the refractive power of the wearing glasses obtained by the lens meter. If you do not enter any preliminary data,
In step S14, it is determined whether or not to perform the program measurement. If program measurement is not to be performed, manual measurement is performed in step S14, and step S30 is performed.
Proceed to. In step S30, it is determined whether or not to print. If not, the reset switch 116 is turned on in step S32. Thereby, the subjective optometer 1 is reset, and the process returns to step S2.

If it is determined in step S12 that the preliminary data is to be input, the preliminary data input switch 106 is turned on in step S18, and the preliminary data input mode is executed in step S20. The procedure for inputting the preliminary data in S20 will be described later in detail. When the preliminary data input mode in step S20 ends, the process proceeds to step S12. If it is determined in step S14 that the program measurement is to be performed, the measurement course selection switch 108 is turned on in step S22. Program measurement is performed according to the course selected in step S24, and after completion, the process proceeds to step S30. The program measurement in S24 will be described later in detail. In the procedure for registering the type and arrangement order of the visual acuity test targets C in step S7, the chart selection switch 114 is turned on in step S50 as shown in FIG. Thus, in step S52, the name of the visual acuity test target C and the cursor (not shown) are displayed on the display 72. In step S54, the +/- switch 110 is turned on. In step S56, the cursor is moved so that the cursor points to a desired visual acuity test target C. In step S58, the yes switch 118 is turned on, and the visual acuity test target C selected in step S60 is registered.

Thereafter, in step S62, it is determined whether or not to continue the registration. If not, the end switch 120 is turned on in step S64, and the registration procedure ends. If it is determined in step S62 that registration is to be continued, the process returns to step S50. In step S10, the procedure for creating an optometry program is as follows.
As shown in FIG. 5, in step S70, an optometry course name selection switch 108 for selecting an optometry course, which is a combination of a plurality of optometry programs, is turned on. In step S74, the cursor is moved to select an examination item. . In step S75, the chart selection switch 114 is turned on, and in step S76, the visual acuity test target C is indicated by a cursor (not shown). In step S77, if the visual acuity test target C indicated by the cursor matches the desired one, the yes switch 118 is turned on. As a result, the inspection item is registered in step S78, and subsequently, in step S79, it is determined whether or not to continue to create the optometry program. If continuing, step S7
3 and if not continued, in step S80,
The end switch 120 is turned on, and the creation of the optometry program ends.

Step S20 of inputting preliminary data such as the refractive power obtained by the refractometer and the refractive power of the wearing glasses obtained by the lens meter is performed in the following procedure. As shown in FIG. 6, first, in step S82, it is determined whether or not to input data such as the refractive power obtained by the refractometer. If not, the process proceeds to step S83, and it is determined whether or not data such as the refractive power obtained by the lens meter is to be input. If it is determined in step S83 that the data has not been input, the process proceeds to step S84, in which it is determined whether or not the input of the preliminary data is to be continued. If this is not to be continued, the yes switch 118 is turned on to terminate the input of the preliminary data. If it is determined in step S82 that data is to be input, then in step S86, the objective switch 1
22 is turned on, the data obtained by the objective optometer in step S87 is input, and the process proceeds to step S83. Here, the display 72 displays the input data. If it is determined in step S83 that data is to be input, then in step S88,
The old frequency switch 122 is turned on, the data obtained by the lens meter in step S89 is input, and the process proceeds to step S84. Here, the display 72 displays the input data.

The program measurement in step 24 is performed as follows. That is, as shown in FIG. 7, first, in step S90, it is determined whether or not the item is a one-eye inspection item. If it is a single-eye inspection item, the process proceeds to step S91,
Perform a right eye examination. Next, the process proceeds to step S92, and it is determined whether or not there is an inspection item next. Step S if available
Proceeding to 93, it is determined whether or not the inspection item is for both eyes.
If it is for both eyes, the process proceeds to step S94. Next, among the single-eye inspection items for which the left-eye inspection has not been performed, the process returns to the first inspection item, and the left-eye inspection is performed in step S95. Next, in step S96, it is determined whether or not there is a next inspection item, and if so, the process proceeds to the next inspection item in step S97. Next, in step S98, it is determined whether or not the item is a binocular inspection item. If the item is a binocular inspection item, the process proceeds to step S99 to execute a binocular inspection.
Next, in step S100, whether there is a next inspection item
That is, it is determined whether or not all the inspection items have been completed, and if it has been completed, the program measurement is completed. If it is determined in step S90 that the item is not a one-eye inspection item, that is, if the item is a binocular inspection item, the process proceeds to S99 to perform a binocular inspection.

If it is determined in step S92 that there is no next inspection item, the process proceeds to step S94. In step S93, the next inspection item is not for both eyes.
That is, if it is determined that the image is for one eye, the process proceeds to step S101.
Then, the process returns to step S91 to execute the right eye inspection. If it is determined in step S96 that there is no next inspection item, the program measurement ends.
If it is determined in step S98 that the test item is not a binocular test item, that is, if the test item is a monocular test item, step S95
Then, the examination of the left eye is performed. If it is determined in step S100 that there is a next inspection item, the process proceeds to the next inspection of step S102, and returns to step S90. Here, the execution of each of the right eye inspection, the left eye inspection, and the binocular inspection in steps S91, S95, and S99 is performed according to the procedure shown in FIG. 9 for each inspection item. That is, in step S103, the chart projector 30 projects a target in accordance with the test item according to a command from the control device 70, and the subjective optometer 1 of the auxiliary optical member plate 6 includes auxiliary optical members necessary for the test item. 18 is arranged on the visual axis of the eye E, and other desired optical functions (for example, a spherical lens plate, a cross cylinder lens, etc.) are arranged.

In step S104, the projected target pattern and the contents of the auxiliary optical member arranged on the visual axis of the eye E are displayed on the display 72. The display 72 also displays an instruction for the examination and an instruction of a key to be operated by the examiner among the operation unit 80 at the same time. Next, in step S105, the examiner performs a key operation of the operation unit 80, and determines whether the operated key is YES108.
If it is ES108, the inspection item being performed ends. In step S105, when a key other than YES108 (for example, + or-key 110) is operated, the process proceeds to step S106, and the subjective optometer 1 switches optical functions corresponding to differently according to examination items. At the same time, the data of the optical function switched in step S107 is displayed on the display 72. Then, the process returns to step S105.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an optometry apparatus according to an embodiment;

FIG. 2 is a plan view of a visual acuity test target;

FIG. 3 is a flowchart showing an optometry procedure according to the embodiment;

FIG. 4 is a flowchart showing a procedure for inputting types and arrangement orders of visual acuity test targets;

FIG. 5 is a flowchart showing a procedure for inputting an optometry order;

FIG. 6 is a flowchart showing a procedure for inputting preliminary data;

FIG. 7 is a flowchart showing a procedure of program measurement;

FIG. 8 is an explanatory diagram showing switches and a display of an operation unit,

FIG. 9 is a flowchart of execution of an inspection item.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Subjective optometer 2 axis 4 Spherical lens plate 6 Auxiliary optical member 8 Spherical lens 10, 20, 36 Step motor 16 Visual axis 30 Chart projector 34 Chart board 49 Optical axis 60 Drive circuit 70 Optometry program control device 72 Display 80 Operation unit 82 Printer

Claims (1)

(57) [Claims] 1. The visual acuity value of a naked eye test, the visual acuity value of an eye to be examined when corrected by the refractive power obtained by objective vision, and the refractive power obtained by a refractive power measurement of a spectacle wearing lens using a lens meter. A subjective optometric apparatus, further comprising a display device for simultaneously displaying the visual acuity value of the eye to be inspected when corrected.