JPH02189127A - Optometer - Google Patents

Abstract

PURPOSE:To simplify an optometrist's operation and to improve the examination efficiency by eliminating the need of inputting the discrimination between one-eye examination and two-eye examination and minimizing the frequency of the optometrist transmitting to the effect whether it is one-eye examination or two-eye examination. CONSTITUTION:An eye examination apparatus 1 where an optical system having variable optical function for an examined eye E is disposed is adapted to conduct eye examination according to an eye examination program. The apparatus discriminates whether an examination item is one-eye examination or two-eye examination, conducts every examination for examination items for one-eye among the examination items, secondly conduct every examination for examination items for the other eye and subsequently conducts examination for the examination items for both eyes. Thus, the need of inputting the discrimination between one-eye examination and two- eye examination is eliminated and the frequency of an optometrist transmitting to the effect whether it is one-eye examination or two-eye examination to an examined person can be reduced to the minimum, so that the inspector's operation can be simplified. Furthermore, as one-eye examination and two-eye examination can be conducted together, the examination efficiency can be hightened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an optometry device, and more particularly to an optometrist that performs programmed optometry using an electric, self-aware optometrist.

(Prior Art) A conventional optometry device having a subjective optometrist and an optometry display device for visual acuity testing has been proposed in Japanese Patent Laid-Open No. 150046/1983. This optometry apparatus has a structure in which the auxiliary lens of the subjective optometrist is attached and detached on the visual axis based on a signal from an index changeover switch.

(Problems that the present invention seeks to solve) Optometric test items include monocular tests such as R&G test and cross cylinder test, and binocular measurements such as binocular balance test and power adjustment. There are those who do this.

In the optometry device proposed in the above-mentioned Japanese Patent Application Laid-Open No. 63-150046, each test item is executed independently, and it does not have a function to distinguish between monocular or binocular measurement.
There was also an inconvenience in terms of usability, as the examiner had to enter whether to perform monocular or binocular measurement before starting each test item.

Furthermore, when moving from a one-eye test to a binocular test, or from a binocular test to a single-eye test, the examiner must inform the examinee of this fact, which is a nuisance for the examiner. Ta.

Furthermore, in conventional optometry apparatuses, each test item is performed independently, and therefore, monocular and binocular tests are performed in a mixed order, resulting in poor optometry efficiency.

The present invention has been made in view of the above-mentioned problems with conventional optometry devices, and there is no need to input the distinction between a single-eye test and a binocular test, and the examiner does not have to input the distinction between a single-eye test and a binocular test, and the examiner does not need to input the discrimination between a single-eye test and a binocular test. Alternatively, it is an object of the present invention to provide an optometry apparatus that minimizes the number of times that a binocular test is communicated, and further performs a single eye test and a binocular test at the same time, and has high test efficiency.

(Structure of the Invention) The present invention is an optometry apparatus that disposes an optical system capable of switching optical functions in front of the eye to be examined, and that performs eye examination according to an eye examination program. , is characterized in that all of the test items for one eye among the test items are tested, then all of the test items for the other eye are tested, and then the test items for both eyes are tested. This is an optometry device.

(Effects of the Invention) According to the present invention, there is no need to input the distinction between a single-eye test and a binocular test, and the examiner can minimize the number of times the test subject is informed of the single-eye test or the binocular test. Since it can be done,
The examiner's operations are simplified, and the examiner can concentrate on understanding the visual recognition state of the visual acuity test optotype of the subject.

Furthermore, the single-eye test and the binocular test are performed at the same time, which has the effect of making it possible to perform optometry with high test efficiency.

(Example) Hereinafter, an example of the optometric apparatus of the present invention will be described based on the drawings. The optometry device includes a subjective optometry device 1, a chart projector 30, a screen 50, and a drive circuit 60 for controlling the subjective optometry device 1 and the chart projector 30.
, an optometry program control device 70 that stores an optometry program and controls optometry operations, and an optometry program control device 7
0, an operating section 80 and a printer 82, which are also connected to the optometry program control device 70. The display 72 displays information necessary for the optometry procedure described below, such as R&G.
During the test, test instructions are given to the test subject such as ``Which of the red and green optotypes do you see better?'' or ``Red...-1 Green...+, Same...YESJ.'' Keys to be operated by the examiner are displayed in response to the examinee's response.

The subjective ophthalmoscope 1 is placed in front of the eye E to be examined and can switch optical functions electrically, and includes a spherical lens plate 4 rotatably attached to a shaft 2 and an auxiliary optical member plate 6. and has. The spherical lens plate 4 has a plurality of circular holes provided near its outer periphery, each of which has spherical lenses 8 having different refractive powers.
A pulse motor 10 and this rotating shaft 12 are arranged.
A desired spherical lens 8 can be placed on the visual axis 16 of the eye E by driving the gear 14 that is attached to the spherical lens plate 4 and meshes 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, an edge filter, etc.
A polarizing filter 18 is disposed, and a desired auxiliary optical member 18 is directed to the subject's eye E by the operation of a pulse motor 20 and a gear 24 that is attached to the rotating shaft 22 and meshes with gear teeth on the outer periphery of the auxiliary lens plate 6. It can be arranged on the axis 16.

The optometry apparatus is further provided with a cylindrical lens plate, a cross cylinder lens, a rotary prism, etc., and the cylindrical lens, cross cylinder, and rotary prism attached to each can be arbitrarily positioned on the visual axis 16.

The chart projector 30 has a chart board 34 rotatably attached to a shaft 32, and a plurality of circular holes provided near the outer periphery of the chart board 34 are provided with optotypes C1 for visual acuity testing as shown in FIG. That is, C01: Visual acuity (0.6-0,
9) Chart C02: Visual acuity (0,9-2.0) Chart CO3: Archyard to the cross C04: Visual acuity (0,5-1.0) Chart C05: Binocular balance chart C06: Cross plagioplasty chart C07: Incorrect Isometric chart C08: Stereoscopic chart C09: Fusion width chart C10: Horizontal fusion width chart C1 and vertical fusion width chart C12: Landolt (0,3~0.5) Chart C13: Landolt (0,6~ 0.9) Chart C14: Landolt (1,0-2.0) Chart C15: Archyard is placed on the cross.

A gear 40 attached to a rotating shaft 38 of a step motor 36 meshes with gear teeth provided on the outer periphery of the chart board 34 . A chart projection optical system 48 is formed by a light source lamp 42, a condenser lens 44, and a projection lens 46, and by driving a step motor 36, an arbitrary optotype C for visual acuity test is set on the optical axis 4 of the chart projection optical system 48.
It can be placed on 9.

The drive circuit 60 is connected to the step motor 1O120, 36 and the light source lamp 44, and controls the drive and lighting of each.

Optometric program control device 70 connected to drive circuit 60
By operating the operation unit 80, the optometry program can be executed, for example, R/G test CC (A) test CC (P) test Binocular balance (polarization) Binocular balance (prism) Power adjustment cross plagiosphasis test Von Greife test stereoscopic A visual acuity test is created, and combinations of each program and a desired optotype C for visual acuity test are accumulated.

A display 72 connected to the optometry program control circuit 70 displays the name of the optometry program being performed by the optometry program control circuit 70, the next operation that the operator must perform, and the like.

In addition, the measured visual acuity value or the visual acuity value input from another device (e.g., a self-aware refractometer) can be categorized by item (
For example, the visual acuity value of the subject's eye when corrected based on the unaided eye visual acuity value, the refractive power obtained by objective vision, and the visual acuity value of the subject's eye when corrected based on the refractive power of the wearing glasses obtained using a lens meter. The visual acuity values are stored in the visual acuity values), and the visual acuity values for each item are simultaneously displayed for each item. The screen 50 is disposed at the intersection of the visual axis 16 and the optical axis 49 and perpendicular to the visual axis 49 . The printer 82 prints items for identifying the subject, preliminary human power data, measured values, and the like.

Next, the operation of the optometric apparatus having the above configuration will be explained. First, in the operation of the programmed optometry, as shown in FIG. 3, in step S1, the power switch 101 is turned on, and in step S2, it is determined whether or not to register a chart.

If the chart is not registered, then in step S3 it is determined whether or not an optometry program is to be created. If the program is not created, it is determined in step S4 whether or not eye examination is to be performed. If you do not want to measure,
In step S5, the power switch 101 is turned off to end the operation of the programmed optometry.

When registering a chart in step S2, the chart registration switch 102 is turned on in step S6, and the process proceeds to step S7. In step S7, the visual acuity test optotype C attached to the chart projector 30
The type and arrangement order are registered, and the process advances to step S2. The procedure for registering the type and arrangement order of the optotypes C for visual acuity test will be described in detail later. Note that instead of the chart projector 30, a non-projection type chart may be similarly registered.

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 310. The procedure for creating an optometry program will be explained in detail later. After creating the optometry program, the process advances to step S2.

In step S4, if it is determined that optometric measurement is to be performed,
It is determined whether preliminary data such as the refractive power obtained by a refractometer and the refractive power of worn glasses obtained by a lens meter should be manually input.

If preliminary data is not input, it is determined in step S14 whether or not program measurement is to be performed.

If the program measurement is not to be performed, manual measurement is performed in step S14, and the process proceeds to Stella 7'S30.

In step S330, it is determined whether or not to print. If not, the reset switch 116 is turned on in step S32. As a result, the subjective ophthalmoscope 1 is reset and the process returns to step S2.

If it is determined in step S12 that the preliminary data should be manually input, the preliminary data input switch 106 is turned on in step 318, and the preliminary data input mode is executed in step S20.

The manual procedure for preparing the preliminary data of 520 will be described in detail later. When the preliminary data manual mode in step 320 ends, the process proceeds to step 512.

If it is determined in step 514 that 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,
Proceed to step S30. The program measurement in S24 will be explained in detail later.

The procedure for registering the type and arrangement order of the optotypes C for visual acuity test in step S7 is as shown in FIG.
0, the chart selection switch 114 is turned on.

As a result, in step S52, the display 7
2, the name of the visual acuity test optotype C and a cursor (not shown) are displayed.

In step S54, the +/- switch 110 is turned on, and in step S56, the cursor is moved so that the cursor points to the desired optotype C for visual acuity test. In step S58, the yes switch 118 is turned on, and the visual acuity test optotype C selected in step S60 is registered.

Thereafter, in step S62, it is determined whether or not to continue the registration. If not, in step 364, the end switch 120 is turned on, and the registration procedure ends. If it is determined in step S62 that registration should be continued, the process returns to step S50.

In step SIO, the procedure for creating an optometry program includes, in step S70, as shown in FIG.
The optometry course name selection switch 108 for selecting an optometry course that is a combination of multiple optometry programs is turned on, and in step 374, the cursor is moved,
Select inspection items.

In step S75, the chart selection switch 114
is turned on, and in step 376, the optotype C for visual acuity test is turned on.
is indicated by a cursor (not shown). In step S77, if the visual acuity test optotype C indicated by the cursor matches the desired one, the yes switch 118 is turned on. As a result, the inspection items are registered in step 378, and then in step S79.
In this step, it is determined whether or not to continue creating the optometry program. If the process is to be continued, the process returns to step S73; if not, the end switch 120 is turned on in step S80, and the creation of the optometry program is ended.

Step 320 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. 6th
As shown in the figure, first, in step S82, it is determined whether data such as refractive power obtained by a left-left meter is to be input. When there is no manual labor, step S
The process proceeds to step 83, where it is determined whether data such as refractive power obtained by the lens meter is to be input.

If it is determined in step S83 that the data will not be manually input, the process proceeds to step 384, where it is determined whether or not to continue inputting preliminary data. If this is not to be continued, the yes switch 118 is turned on to end the preliminary data input.

If it is determined in step S82 that data is to be input, in step S86, the objective switch 122
is turned on, the data obtained by the objective ophthalmoscope is input in step S87, and the process proceeds to step S83. Here, this manually generated data is displayed on the display 72.

If it is determined in step 383 that the data is manually input, in step S88, the old power switch 12
2 is turned on, the data obtained by the lens meter is manually entered in step S89, and the process proceeds to step S384.

Here, the input data is displayed on the display 72.

The program measurement in step 24 is performed as follows. That is, as shown in FIG. 7, first step S9
0, it is determined whether the test item is for one eye or not. If it is a test item for one eye, the process advances to step 391 and the right eye test is performed. Next, the process proceeds to step 392, where it is determined whether there is a next test item. If so, the process advances to step S93, and it is determined whether the test item is for both eyes. If it is for both eyes, the process advances to step S94.

Next, among the test items for one eye for which the left eye test has not been performed, the process returns to the previous test item, and in step S95, the left eye test is performed. Next, in step S96, it is determined whether or not there is a next test item, and if there is, the process proceeds to step S97 to proceed to the next test item.

Next, in step 398, it is determined whether or not the test item is for both eyes. If it is a binocular test item, the process advances to step S99 and a binocular test is performed. Next, in step 5100, it is determined whether there is a next test item, that is, whether all test items have been completed, and if they have been completed, the program measurement is ended.

In step S90, if it is determined that the test item is not a single eye test item, that is, it is a binocular test item, the process proceeds to S99 and a binocular test is performed.

If it is determined in step 392 that there is no next test item, the process advances to step 394.

In step 393, if it is determined that the next test item is not for both eyes, that is, for one eye, step 51
The process advances to the next test after 01, and returns to step S91 to perform the right eye test.

If it is determined in step 396 that there is no next test item, the program measurement ends.

If it is determined in step 598 that the test item is not a test item for both eyes, that is, it is a test item for one eye, step S95
Go back and perform the left eye exam.

If it is determined in step 5100 that there is a next test item, the process advances to the next test in step 5102 and returns to step S90.

Here, the right eye test, left eye test, and binocular test in steps S91, S95, and S99 are performed in accordance with the procedure shown in FIG. 9 for each test item. That is, in step 5103, the chart projector 30 projects an optotype according to the test item according to the command from the control device 70, and the subjective ophthalmoscope 1 uses the auxiliary optical member plate 6 to
The auxiliary optical member 18 necessary for the inspection item is arranged on the visual axis of the eye E to be examined, and other desired optical functions (for example, a spherical lens plate, a cross cylinder lens, etc.) are arranged.

In step 5104, the pattern of the projected optotype and the contents of the auxiliary optical member placed on the visual axis of the eye E to be examined are displayed on the display 72.

The display 72 also simultaneously displays instructions for the examination, instructions for keys to be operated by the examiner in the operating section 80, and the like.

Next, in step 5105, the examiner operates a key on the operation unit 80, and it is determined whether the operated key is YES108, and if YES108, the inspection item being performed is completed.

In step 5105, if a key other than YES 108 (for example, + or - key 110) is imitated, the process proceeds to step 5106, where the subjective ophthalmoscope 1 switches the corresponding optical function differently depending on the test item. . At the same time, the data of the optical function switched in step 5107 is displayed on the display 72. and step 51
Return to 05.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the optometry apparatus of the embodiment, Fig. 2 is a plan view of the optometry target for visual acuity testing, Fig. 3 is a flowchart showing the optometry procedure of the embodiment, and Fig. 4 is a diagram of the optometry target for visual acuity test. Figure 5 is a flowchart showing the procedure for inputting the type and arrangement order, Figure 5 is a flowchart showing the procedure for manually inputting the order of optometry, Figure 6 is a flowchart showing the procedure for inputting preliminary data, and Figure 7 is a flowchart for the program measurement. FIG. 8 is a flowchart showing the procedure, FIG. 8 is an explanatory diagram showing the switches and display of the operating section, and FIG. 9 is a flowchart showing the execution of inspection items. 1...Subjective optometrist 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 Fig. 2 Figure 4 Figure 5 Figure 6 Figure 9 Procedural amendment (method) 1. Indication of the case 1999 Patent Application No. 9 27 2. Name of the invention Optometry device 34 Person making the amendment Applicants related to the case Name: Dobcon Co., Ltd. 4, Agent 6, All drawings subject to amendment

Claims (1)

[Claims] In an optometry device that has an optical system that can switch optical functions placed in front of the subject's eye and performs eye examinations according to an optometry program, it determines whether the test item is a unilateral or binocular test, and An optometry apparatus characterized in that it tests all test items for one eye, then tests all test items for the other eye, and then tests test items for both eyes.