System and method for recording the retinal reflex image

• US 20020036750A1
• Filed: 09/22/2001
• Published: 03/28/2002
• Est. Priority Date: 09/23/2000
• Status: Active Grant

• Current Assignee: Hans Brandl, Heinrich A. Eberl, Roland H.C. Eberl
• Original Assignee: Hans Brandl, Heinrich A. Eberl, Roland H.C. Eberl
• Inventors: Eberl, Roland H. C., Brandl, Hans, Eberl, Heinrich A.
• Granted Patent: US 6,916,096 B2
• Time in Patent Office: Days
• US Class Current: 351/207
• CPC Class Codes: A61B 3/12 for looking at the eye fundus, e.g. ophthalmoscopes A61B3/13 takes precedence
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 21/0028 specially adapted for specific applications, e.g. for endoscopes, ophthalmoscopes, attachments to conventional microscopes
• CPC Class Codes: G02B 21/0064 multi-spectral or wavelength-selective arrangements, e.g. wavelength fan-out, chromatic profiling G02B21/0076 takes precedence
• CPC Class Codes: G02B 26/10 Scanning systems
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/017 Head mounted

Abstract

A system and method for eye examination by scanning light scattered from an area of the retina and projecting light into the eye includes a scanner, a receiver unit, and a projection unit. The scanner is constructed and arranged to scan an area on the retina. The receiver unit is optically coupled to the scanner and constructed and arranged to capture light scattered back from the area of the retina. The projection unit is constructed to generate and optically couple a light configuration to the scanner for delivering the light configuration into the eye relative to the area of the retina, wherein the scanner, the receiver unit and the projection unit are cooperatively designed to analyse a patient'"'"'s sight.

Claims

1. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina;

said scanner, said receiver unit and said projection unit being cooperatively designed to analyse a patient'"'"'s sight.

2. The system of claim 1 wherein said receiver unit is constructed to generate a capture image based on said captured light.

3. The system of claim 1 wherein the projection unit is constructed to generate said light configuration forming a projection image.

5. The system of claim 1 wherein said scanner includes a beam deflection unit.

6. The system of claim 1 wherein said projection unit is constructed to generate a predetermined distribution of patterns over several selected regions of the retina.

7. The system of claim 1 wherein said scanner, said receiver unit and said projection unit are designed to further analyse a movement of a patient'"'"'s eye by generating random dot patterns on the retina of said eye.

8. The system of claim 1 wherein said scanner, said receiver unit and said projection unit are designed to analyse the spatial vision of a patient'"'"'s eye by generating random dot patterns on the retina of said eye.

9. The system of claim 1 wherein said scanner includes a beam splitter constructed and arranged to transmit into the eye outside light and to reflect scattered light from the retina of the eye to said receiver unit.

10. The system of claim 1 wherein said receiver unit includes an opto-electronic detector.

11. The system of claim 1 wherein said projection unit includes a laser source.

12. The system of claim 1 including a scanning capture device for capturing an image of an outside object projected onto the retina.

14. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed to determine anomalies in the motor response of the eyeball by monitoring orientation of the eyeball.

15. The system of claim 13 wherein said scanner, said receiver is unit and said projection unit are cooperatively designed to determine the squint angle by determining and monitoring the center point of both eyes.

16. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed to detect parasympathetic/sympathetic efferences, by monitoring and evaluating the motor response of the pupil.

17. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed as a synoptophor.

18. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed as a synoptometer with no device convergence.

19. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed as a device for determining cyclodeviation.

20. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed as a phase difference haploscope.

21. The system of claim 13 wherein said scanner, said receiver unit and said projection unit are cooperatively designed as a device for detecting phoria identical to the visual axis with different lines of sight.

4. The system of claim I wherein said projection unit is constructed to generate a predetermined distribution of patterns on the retina.

13. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed to determine anomalies in the motor response of the eyeball.

22. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed to check the function of the retina by making use of a sample electro-retinogram (ERG) and a correlation device, with which an image played onto the retina can be brought into correlation with the ERG actually determined.

24. The system of claim 23 wherein said scanner, said receiver unit and said projection unit are cooperatively designed to measure said contrast sensitivity of a patient'"'"'s sight as a function of the spatial frequency.

23. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed to measure the contrast sensitivity of a patient'"'"'s sight.

25. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed for white-noise-field campimetry.

26. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed to determine the extent and the position of central field of vision defects (scotomae).

27. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed as a visual enabling for precision surgery device (VEP).

28. A system for eye examination by scanning light back-scattered from the retina and for delivering optical signals into the eye, comprising:

a scanner constructed and arranged to scan an area on the retina;

a receiver unit, optically coupled to said scanner, constructed and arranged to capture light scattered back from said area of the retina; and

a projection unit constructed to generate and provide a light configuration to said scanner for delivering said light configuration into the eye relative to said area of the retina, said scanner, said receiver unit and said projection unit being cooperatively designed to perform as a scanning laser ophthalmoscope device (SLO).

29. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

analysing a patient'"'"'s sight based on said captured light and said generated light configuration.

30. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

determining anomalies in the motor response of the eyeball.

31. The method of claim 30 wherein said determining anomalies in the motor response of the eyeball is performed by monitoring orientation of the eyeball.

32. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

said scanner, said receiver unit and said projection unit being cooperatively designed to check the function of the retina by making use of a sample electro-retinogram (ERG) and a correlation device, with which an image played onto the retina can be brought into correlation with the ERG actually determined.

33. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

measuring the contrast sensitivity of a patient'"'"'s sight.

34. The method of claim 33 wherein said measuring said contrast sensitivity of a patient'"'"'s sight is performed as a function of the spatial frequency.

35. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

performing white-noise-field campimetry.

36. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

determining the extent and the position of central field of vision defects (scotomae).

37. A method of eye examination, comprising the acts of:

scanning an area on the retina;

capturing light scattered back from said area of the retina;

generating a light configuration and delivering said light configuration into the eye relative to said area of the retina; and

performing visual enabling for precision surgery (VEP).