JP2999963B2 - Binocular function test apparatus and test method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binocular vision testing apparatus and method for measuring a binocular vision function, in particular, a subjective oblique angle of oblique observation.

[0002]

2. Description of the Related Art As a method for measuring a subjective oblique angle of oblique position,
There is a so-called Maddox test. In this test,
Madd having a partition plate for separating the left-eye field and the right-eye field so that the left eye can see the horizontal scale 101 shown in FIG. 19 and the right eye can see the vertical bar 102 shown in FIG.
An instrument called ox wing is used. When the subject is normal, the vertical bar 102 appears to match the reference position “0” of the horizontal scale 101 as shown in FIG. When the subject is oblique, the vertical bar 102 appears at a position shifted from the reference position “0” of the horizontal scale 101 as shown in FIG.

In this test, the subject answers what position the vertical bar 102 is visible on the horizontal scale 101, and based on the answer, the examiner determines whether the subject is normal. . Therefore, there is a problem that the amount of deviation of the vertical bar 102 from the reference position of the horizontal scale 101 cannot be inspected objectively or automatically. That is, there is a problem that the degree of strabismus cannot be measured objectively or automatically.

[0004]

[Problems to be solved by the invention]

[0005] It is an object of the present invention to provide a binocular function testing apparatus and a binocular function testing method that can objectively measure the degree of strabismus.

It is another object of the present invention to provide a binocular vision function testing device and a binocular vision function testing method that can automatically measure the degree of strabismus.

[0007]

A binocular vision function testing apparatus according to the present invention displays one of a reference image and an index image as a left-eye image and the other as a right-eye image on a three-dimensional display device. The reference image and the index image.
Forming an image display means Ru is displayed on the two-dimensional display device inspector to, such that the display position of a predetermined reference position and the index image of the reference image matches the movement command for moving the display position of the index image , A first input means for inputting by the subject, based on a movement command from the first input means,
3D display and 2D display for inspector
Index image moving means for moving the display position of the index image being a display position of the reference position and the index image of the reference image and matches when the examinee is visually recognized, the confirmation input indicating that the It is characterized by comprising a second input means for causing the inspector to perform the operation, and a calculating means for calculating a shift amount of the index image from the reference position of the reference image when a confirmation input is made.

[0008] According to the binocular vision function testing apparatus of the present invention, it is possible to objectively and automatically measure the deviation amount of the index image from the reference position of the reference image.

[0009] It is possible to provide a judging means for judging whether or not the inspected person is normal based on the shift amount calculated by the calculating means, and a seventh step of notifying the inspector of the judgment result by the judging means. preferable. As the notification means, for example, a method of displaying the determination result on a two-dimensional display device for the inspector, a method of outputting the determination result by a printer, and the like are used. The shift amount calculated by the calculation means may be displayed on a two-dimensional display device for the inspector, or output by a printer. Further, the shift amount calculated by the calculating means may be stored in a storage device such as a hard disk. In this way, the test results for a plurality of subjects can be stored in a database.

[0010] binocular vision test method according to the invention, of the reference image and the index image, either the left-eye image and the other as the right-eye image, is displayed on the three-dimensional display device, also the reference image and Composite image of index image for inspector
First step of Ru is displayed on the two-dimensional display device, such that the display position of a predetermined reference position and the index image of the reference image matches the movement command for moving the display position of the index image, the examinee 2nd step to input, based on the input movement command, 3D display device and inspector
Third step of moving the display position of the index image displayed on the two-dimensional display device for use , when the subject visually recognizes that the reference position of the reference image and the display position of the index image match each other, And a fifth step of calculating a shift amount of the index image with respect to the reference position of the reference image when there is a confirmation input. I do.

According to the binocular vision function inspection method of the present invention, it is possible to objectively and automatically measure the deviation amount of the index image from the reference position of the reference image.

[0012] Based on the shift amount calculated by the fifth step, a seventh step of notifying the examiner of the determination result according to the sixth step, and a sixth step of determining whether the examinee is normal Preferably, it is provided. No.
As a method of notifying the inspector of the determination result in the six steps , for example, a method of displaying the determination result on a two-dimensional display device for the inspector, a method of outputting the determination result by a printer, and the like are used. The displacement amount calculated in the fifth step is displayed on a two-dimensional display device for the inspector,
You may make it output by a printer. Also the fifth
The shift amount calculated in the step may be stored in a storage device such as a hard disk. In this way, the test results for a plurality of subjects can be stored in a database.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the external appearance of the binocular visual inspection apparatus.

The binocular function testing device is composed of a personal computer 1 operated by an examiner and a three-dimensional display device (3D display device) 2 for providing an image of the binocular function to the subject. It is configured. In this example, as the personal computer 1,
A so-called notebook computer having a two-dimensional display (2D display) 19 is used. 3D
As the display device 2, a parallax barrier type is used.

FIG. 2 shows a configuration of the binocular vision function inspection apparatus.

The personal computer 1 has a CPU 11
Is controlled by A hard disk 12 for storing the programs and the like and a memory 13 for storing necessary data are connected to the CPU 11. CPU1
1, an input device 14 including a mouse, a speaker 20 and a printer 21 are connected.

Further, a first frame memory 15 and a second frame memory 16 are connected to the CPU 11. The first frame memory 15 stores the D / A converter 1
7 is connected to the 2D display 19. The second frame memory 16 is connected to the 3D display device 2 via a D / A converter 18.

FIG. 3 shows the configuration of the display unit of the 3D display device 2.

As shown in FIG. 4, the 3D display device 2 outputs a reduced image 30L for the left eye obtained by reducing the original image for the left eye from the personal computer 1 to １ ／ in the horizontal direction, and an original right eye image. Information 30 consisting of a right-eye reduced image 30R in which the image for use has been reduced by half in the horizontal direction.
Is sent. The 3D display device 2 decomposes the received left-eye reduced image and right-eye reduced image into vertically elongated strip-shaped images, respectively, as shown in FIGS. 3 and 4.
The left-eye strip image 31L and the right-eye strip image 31R are alternately arranged in the horizontal direction on the liquid crystal panel 41 and displayed.

As shown in FIG. 3, a backlight 42 is provided on the back side of the liquid crystal panel 41. On the front side of the liquid crystal panel 41, a parallax barrier 43 in which openings 43a and light shielding portions 43b are alternately arranged in the horizontal direction is arranged. When the subject observes the image on the liquid crystal panel 41 through the parallax barrier 43, the left eye L sees only the left-eye strip image, and the right eye R sees only the right-eye strip image. .

FIG. 5 shows the procedure of the binocular vision function inspection process.

The hard disk 12 stores an image of a cage as a reference image shown in FIG. 6 and an image of a lion as an index image shown in FIG. FIG. 8 shows an example of an initial screen displayed on the 2D display 19 (hereinafter, referred to as an inspector screen). On the initial screen, a start button 51 and an end button 52 are displayed.

When the start button 51 is pressed , the cage image and the lion image are read from the hard disk 12 and stored in the memory 13 (step 1). Then, these composite images are sent to the 2D display 19 via the frame memory 15 and the D / A converter 17, and
These images are displayed on the display 19 (step 2). An example of this image is shown in FIG.

In this example, in addition to the start button 51 and the end button 52, an image 61 of a cage and an image 62 of a lion are displayed, and their horizontal displacement and vertical displacement are displayed.

On the other hand, the image of the cage stored in the memory 13 is used as the image for the left eye, and the image of the lion is used as the image for the right eye.
Each of them is reduced by half in the horizontal direction to generate an image for one frame. FIG. 10 shows an example of the reduced image for the left eye and the reduced image for the right eye corresponding to the image of the cage and the lion displayed on the screen for the examiner of FIG. The generated image for one frame is sent to the 3D display device 2 via the frame memory 16 and the D / A converter 18.

The 3D display device 2 decomposes the received left-eye reduced image and right-eye reduced image into vertically elongated strip-shaped images, respectively, and forms a liquid crystal panel 41 (hereinafter, referred to as a screen for an examinee). A strip image for the left eye and a strip image for the right eye are alternately arranged in the horizontal direction and displayed (step 3). Therefore, an image similar to the image displayed on the inspector screen, that is, an image of the cage and an image of the lion are displayed on the inspector screen. However, only the image of the cage is visible to the left eye of the subject, and the right eye of the subject is
Only the image of the lion is visible.

The initial position of the mouse is stored in the memory 13 (step 4). Thereafter, a voice message "Please put the lion in a cage" is output from the speaker 20 (step 5).

The subject operates the mouse (included in the input device 14) so that the lion enters the cage, and clicks the mouse when the lion enters the cage.

When the mouse is operated, the current position of the mouse is stored in the memory 13 (step 6). Then, the image of the lion is moved on the screen for the inspector and the screen for the subject based on the moving direction and the moving amount of the mouse (step 7). The new image displayed on the inspector screen and the new image sent to the 3D display device 2 are generated based on the cage image and the lion image stored in the inspector screen memory 13. .

Then, based on the moving direction and the moving amount of the mouse, the shift amount (horizontal shift amount and vertical shift amount) between the cage image and the lion image is calculated and calculated on the screen for the examiner. The deviation amount is displayed (step 8).

Until the mouse is clicked, the processing of steps 6 to 8 is repeated. If the mouse is clicked, the result in step 9 becomes YES,
Proceed to. FIG. 11 shows an example of the screen for the inspector when the mouse is clicked. FIG. 12 shows a reduced image for the left eye and a reduced image for the right eye corresponding to the image of the cage and the lion displayed on the screen for the examiner of FIG.

In step 10, if the shift amount between the cage image and the lion image is within the allowable range, "normal" is displayed on the inspector screen if it is outside the allowable range. Further, the deviation amount from the subject is stored in the hard disk 12 (step 11), and the inspection result is output by the printer 21 (step 1).
2).

In the above-described embodiment, an example is described in which the image of the cage, which is the reference image, is used as the image for the left eye, and the image of the lion as the index image moved by the mouse is used as the image for the right eye. It is preferable to provide both such an inspection mode and an inspection mode in which the image of the cage is used as the right-eye image and the image of the lion moved by the mouse is used as the left-eye image.

As shown in FIGS. 13 and 14,
A horizontal scale image 71 may be used instead of the cage image 61 as the reference image, and a vertical bar image 72 may be used instead of the lion image 62 as the index image. FIG.
3 shows a screen for an inspector when an image 71 of a horizontal scale and an image 72 of a vertical bar are used. FIG.
13 shows a reduced image for the left eye corresponding to the image 71 of the horizontal scale and a reduced image for the right eye corresponding to the image 72 of the vertical bar displayed on the screen for the inspector of FIG. In this case, the shift amount of the vertical bar image 72 with respect to the reference position “0” of the horizontal scale image 71 is displayed as the index shift on the screen for the inspector.

As shown in FIGS. 15 and 16,
A vertical scale image 81 may be used instead of the cage image 61 as the reference image, and a horizontal bar image 82 may be used instead of the lion image 62 as the index image. FIG.
The screen for the inspector in the case of using the image 81 of the vertical scale and the image of the horizontal bar 82 is shown. FIG. 16 shows a vertical scale image 8 displayed on the inspector screen of FIG.
1 shows a left-eye reduced image corresponding to 1 and a right-eye reduced image corresponding to the horizontal bar image 82. In this case,
The reference position of the vertical scale image 81 is displayed on the screen for the inspector.
The shift amount of the horizontal bar image 82 with respect to 0 "is displayed as an index shift.

As shown in FIGS. 17 and 18,
A strip-shaped image 91 is used as a reference image, a strip-shaped image 92 is used as an index image to be moved by the operation of the subject, and a plurality of display positions of the reference image are set in one screen. Move the index image to
The shift amount may be inspected.

FIG. 17 shows a screen for an inspector, in which a reference image 91 and an index image 92 with hatching are shown.
Indicates that the inspection has been completed, and indicates that the solid black reference image 91 and the index image 92 are currently being inspected. FIG. 18 shows a reduced image for the left eye corresponding to the reference image 91 currently being inspected and a reduced image for the right eye corresponding to the index image 92 currently being inspected.

In the above embodiment, a parallax barrier type display device is used as the 3D display device, but a 3D display device that does not use other glasses, such as a lenticular type, may be used. Further, as the 3D display device, a 3D display device using polarizing glasses and liquid crystal shutter glasses together may be used.

[0040]

According to the present invention, the degree of squint can be objectively measured and the degree of squint can be automatically measured.

[Brief description of the drawings]

FIG. 1 is an external view showing an external appearance of a binocular visual function testing device.

FIG. 2 is a block diagram illustrating a configuration of a binocular vision function testing device.

FIG. 3 is a schematic diagram illustrating a configuration of a display unit of the 3D display device.

FIG. 4 is a schematic diagram illustrating an image supplied from a personal computer to a 3D display device and an image displayed on the 3D display device.

FIG. 5 is a flowchart showing a binocular vision function inspection processing procedure.

FIG. 6 is a schematic diagram showing an image of a cage as a reference image.

FIG. 7 is a schematic diagram showing an image of a lion as an index image.

FIG. 8 is a schematic diagram showing an example of an initial screen when a binocular vision function test is performed.

FIG. 9 shows an example of an inspector screen immediately after the start of the binocular vision function test.

10 is a schematic diagram showing a reduced image for the left eye corresponding to the image of the cage displayed on the screen for the inspector of FIG. 9 and a reduced image for the right eye corresponding to the image of a lion displayed on the screen for the inspector of FIG. 9; FIG.

FIG. 11 shows a state in which a click is pressed by the subject.
5 shows an example of an inspector screen.

12 is a schematic diagram showing a reduced image for the left eye corresponding to the image of the cage displayed on the screen for the inspector of FIG. 11 and a reduced image for the right eye corresponding to the image of a lion displayed on the screen for the inspector of FIG. 11; FIG.

FIG. 13 shows an example of an inspector screen when a horizontal scale image is used as a reference image and a vertical bar image is used as an index image.

14 shows a reduced image for the left eye corresponding to the image of the horizontal scale displayed on the screen for the inspector of FIG. 13 and a reduced image for the right eye corresponding to the image of the vertical bar displayed on the screen for the inspector of FIG. FIG.

FIG. 15 shows an example of an inspector screen when a vertical scale image is used as a reference image and a horizontal bar image is used as an index image.

16 shows a reduced image for the left eye corresponding to the image of the vertical scale displayed on the screen for the inspector of FIG. 15 and a reduced image for the right eye corresponding to the image of the horizontal bar displayed on the screen for the inspector of FIG. FIG.

FIG. 17 shows an example of an inspector screen when a strip image is used as a reference image and an index image.

18 is a reduced image for the left eye corresponding to the reference image currently being inspected displayed on the screen for the inspector of FIG. 17 and the right eye corresponding to the index image currently being inspected displayed on the screen for the inspector of FIG. It is a schematic diagram which shows the reduced image for use.

FIG. 19 is a schematic diagram showing a horizontal scale used in a conventional Maddox test.

FIG. 20 is a schematic view showing a vertical bar used in a conventional Maddox test.

FIG. 21 is a schematic diagram showing an image visually recognized by the subject when the subject is normal.

FIG. 22 is a schematic diagram showing an image visually recognized by the subject when the subject is oblique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Personal computer 2 3D display device 11 CPU 12 Hard disk 13 Memory 14 Input device 15, 16 Frame memory 17, 18 D / A converter 19 2D display 20 Speaker 21 Printer

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Takashi Ikeda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-8-38426 (JP, A) Hei 7-163520 (JP, A) JP-A-62-284628 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 3/00-3/08 JICST file (JOIS)

Claims (4)

(57) [Claims] 1. A three-dimensional display device for displaying one of a reference image and an index image as a left-eye image and the other as a right-eye image.
Forming an image display means Ru is displayed on the two-dimensional display device inspector to, such that the display position of a predetermined reference position and the index image of the reference image matches the movement command for moving the display position of the index image A first input means for inputting by a subject, a three-dimensional display device based on a movement command from the first input means.
Image moving means for moving the display position of the index image displayed on the display and the two-dimensional display device for the inspector, the subject visually recognizes that the reference position of the reference image and the display position of the index image match. A second input means for causing the subject to perform a confirmation input indicating that, and a calculation means for calculating a shift amount of the index image with respect to the reference position of the reference image when the confirmation input is provided. Binocular vision function testing device provided. A determining unit for determining whether or not the subject is normal based on the amount of deviation calculated by the calculating unit; and a notifying unit for notifying the inspector of a result of the determination by the determining unit. The binocular vision function inspection device according to claim 1, wherein 3. A three-dimensional display device displays one of the reference image and the index image as a left-eye image and the other as a right-eye image.
First step of Ru display the formed image to the two-dimensional display device inspector, such that the display position of a predetermined reference position and the index image of the reference image matches the movement command for moving the display position of the index image A second step of inputting by the subject, based on the input movement command, a three-dimensional display device and
A third step of moving the display position of the index image displayed on the two-dimensional display device for the inspector, when the subject visually recognizes that the reference position of the reference image matches the display position of the index image, A fourth step of causing the subject to perform a confirmation input indicating that, and a fifth step of calculating a shift amount of the index image from the reference position of the reference image when the confirmation input is performed. Visual function test method. 4. A sixth step of judging whether or not the subject is normal based on the shift amount calculated in the fifth step, and a seventh step of informing the examiner of the result of the sixth step . The binocular vision function testing method according to claim 3, comprising: