METHOD FOR TESTING EYES AND VISION TESTING SYSTEM

Abstract

A method for testing the eyes of a test person with the aid of a vision testing system as well as a vision testing system. A trial frame of the vision testing system is disposed in front of the eyes, said trial frame having at least one trial lens, at least one numerical value of an optical parameter which characterises the trial lens being recorded by means of a camera of a camera device of a display apparatus, said display apparatus being controlled by means of a control device of the vision testing system, said numerical value being identified by the control device by means of image processing, said numerical value being identified for a sphere and/or a cylinder and/or an axis and/or a prism.

Claims

1. A method for testing the eyes of a test person with the aid of a vision testing system a trial frame of the vision testing system being disposed in front of the eyes, said trial frame having at least one trial lens, wherein at least one numerical value of an optical parameter which characterises the trial lens is recorded by a camera of a camera device of a display apparatus of the vision testing system, said display apparatus being controlled by a control device of the vision testing system, said numerical value being identified by the control device by image processing, said numerical value being identified for a sphere and/or a cylinder and/or an axis and/or a prism.

2. The method according to claim 1, wherein vision test symbols are visualised for at least one eye of the test person by means of a screen of the display apparatus.

3. The method according to claim 1, wherein the camera is actuated by at least one input element of the display apparatus.

4. The method according to claim 1, wherein the control device stores the numerical value in a database of the vision testing system.

5. The method according to claim 1, wherein a subjective refraction of the eye is established by the trial frame.

6. The method according to claim 1, wherein a facial recognition of the test person is carried out by the camera or another camera of the camera device.

7. The method according to claim 1, wherein the vision testing system is controlled by a voice-operated control apparatus of the vision testing system.

8. A vision testing system for testing the eyes of a test person, said vision testing system comprising a display apparatus, said display apparatus comprising a screen by means of which vision test symbols can be visualised for at least one eye of the test person, a trial frame of the vision testing system being able to be disposed in front of the eyes, said trial frame having at least one trial lens, wherein the display apparatus includes a camera device having a camera by means of which at least one numerical value of an optical parameter which characterises the trial lens can be recorded, said vision testing system including a control device by means of which the display apparatus can be controlled, said numerical value being identifiable by the control device by image processing.

9. The vision testing system according to claim 8, wherein the screen and the camera are disposed in a common housing of the display apparatus.

10. The vision testing system according to claim 8 wherein the camera device can be moved into a storage position in the display apparatus or into a recording position outside of the display apparatus.

11. The vision testing system according to claim 8, wherein the screen is backlit.

12. The vision testing system according to claim 8, wherein the display apparatus includes a stationary distance-test display apparatus whose display surface size is realised for eye tests with a distance between the eye and the display of 3 m to 10 m, and/or includes a portable close-test display apparatus whose display surface size is realised for eye tests with a distance between the eye and the display of 10 cm to 3 m.

13. The vision testing system according to claim 8, wherein the trial frame is realised as a phoropter.

14. The vision testing system according to claim 8, wherein the display apparatus includes an illumination device by means of which the trial frame and/or the eye can be illuminated.

15. The vision testing system according to claim 14, wherein the illumination device includes an infrared light source.

16. The vision testing system according to claim 8, wherein the trial lens includes a frame which has a handle, said frame being received by a retaining unit of the trial frame.

17. The vision testing system according to claim 16, wherein the frame includes an inscription showing the numerical value.

18. The vision testing system according to claim 16, wherein the frame includes an RFID transponder and/or a data code.

19. The vision testing system according to claim 8, wherein the vision testing system comprises a control apparatus for controlling the display apparatus.

20. The vision testing system according to claim 8, wherein the trial frame can receive a plurality of trial lenses.

21. The vision testing system according to claim 8, wherein the trial frame includes a scale, preferably for displaying a numerical value for an axis.

22. The vision testing system according to claim 21, wherein a cylindrical trial lens includes an opening in a frame of the trial lens, preferably in a handle of the frame.

Description

[0033] In the following, preferred embodiments of the disclosure are explained in more detail with reference to the enclosed drawing.

[0034] In the figures:

[0035] FIG. 1 shows a front view of a display apparatus;

[0036] FIG. 2 shows a front view of a trial lens in one embodiment;

[0037] FIG. 3 shows a front view of a trial lens in another embodiment.

[0038] FIG. 1 shows a vision testing system 10 having a display apparatus 11 which includes a backlit screen 12 in the manner of a television set or tablet computer. The display apparatus 11 disposes of a camera device 13 having a camera 14 by means of which at least one numerical value of an optical parameter which characterises a trial lens not shown here is recorded. Furthermore, the vision testing system 10 comprises a control device (not shown here either) by means of which the display apparatus 11 is controlled, said numerical value being identified by the control device by means of image processing. By means of the screen 12, vision test symbols are visualised for a test person in order to establish a subjective refraction value of an eye of the test person. During an eye test, a trial frame (not illustrated here) of the vision testing system 10, said trial frame having the trial lens, is disposed in front of the eyes of the test person.

[0039] FIG. 2 shows a trial lens 15 which comprises a lens 16 as well as a frame 17 having a handle 18. Furthermore, an inscription 19 is applied to the handle 18. The inscription 19 shows a numerical value 1.5, characterising the trial lens 15 as a spherical trial lens having 1.5 dioptres.

[0040] FIG. 3 shows a trial lens 20 which also comprises a lens 21 as well as a frame 22 having a handle 23 and an inscription 24. The inscription 24 shows a numerical value +0.25, characterising the trial lens 20 as a cylindrical trial lens having +0.25 dioptres. Furthermore, the handle 23 of the frame 22 includes an opening 25. The trial frame, which is not shown here, includes a scale for displaying a numerical value for an axis. If the trial lens 20 is now disposed at the trial frame, an operator can have a look at the scale through the opening 25 and set the value for the axis. In case a trial lens 15 and a trial lens 20 are disposed in front of an eye of the test person together with the trial frame, the trial lenses 15 and 20 can be rotated in such a manner that the handle 18 does not cover the opening 25, which would block the view of an operator or of the camera 14 onto the numerical value for the axis.