System and methods for the treatment of retinal diseases

• US 7,682,021 B2
• Filed: 01/31/2006
• Issued: 03/23/2010
• Est. Priority Date: 02/08/2002
• Status: Active Grant

• Current Assignee: NovaVision
• Original Assignee: NovaVision
• Inventors: Sabel, Bernhard
• Primary Examiner(s): Mack; Ricky L
• Assistant Examiner(s): PINKNEY, DAWAYNE
• Application Number:
  US11/343,960
• Publication Number:
  US 20060283466A1
• Time in Patent Office: 1,512 Days
• Field of Search: 351/200, 351/201, 351/203, 351222-224, 351/246, 351/46, 607 87- 88, 606/2
• US Class Current: 351/203
• CPC Class Codes: A61B 3/024 for determining the visual field, e.g. perimeter types
• CPC Class Codes: A61H 5/00 Exercisers for the eyes

Abstract

Systems and methods for treating a retinal disease in a human include locating and defining one or more zones of vision within the human'"'"'s visual system and defining a treatment area which is located within at least one of the zones. The method of this embodiment may also include treating the human'"'"'s retinal disease by presenting visual stimuli to the treatment area at a specified location and with a specified definition and recording changes in specified characteristics of the human'"'"'s visual system. The method of this embodiment may also include reiterating the previous steps so as to improve the human'"'"'s overall visual system.

Claims

1. A method for treating a retinal disease, the method comprising:

selecting a person having a retinal defect affecting a portion of a visual field of the person;

locating and defining one or more zones of vision within the person'"'"'s visual field;

defining a treatment area which is located within at least one of the zones of vision;

concurrently displaying, to the person, a plurality of fixation anchors lying within the person'"'"'s visual field and surrounding the affected portion of a person'"'"'s visual field;

treating at least one zone of vision by presenting visual stimuli to the treatment area at specified locations;

recording changes in specified characteristics of the person'"'"'s visual field; and

iterating at least the steps of defining a treatment area, presenting visual stimuli, and recording the changes so as to improve the person'"'"'s overall vision.

2. The method of claim 1, wherein iterating includes adapting the locations of the presented visual stimuli according to the changes in the specified characteristics of the person'"'"'s visual field.

3. The method of claim 1, wherein the person'"'"'s visual field includes a zone of intact vision and the treating includes presenting visual stimuli to the zone of intact vision.

4. The method of claim 1, wherein the person'"'"'s visual field includes a transition zone and

wherein the presenting visual stimuli includes treating the transition zone.

5. The method of claim 1, wherein the person'"'"'s visual field includes a blind zone and the presenting visual stimuli includes treating the blind zone.

6. The method of claim 1, wherein the treatment area has a size, a location and a kind selected in accordance with a size, a location and a kind of at least one of the zone of intact vision, the transition zone, and the blind zone.

7. The method of claim 1, wherein the visual stimuli are light stimuli of at least one of different color, luminance, intensity, and shape.

8. The method of claim 1, wherein substantially all visual stimuli are presented in or immediately adjacent to the zone of intact vision.

9. The method of claim 1, wherein the visual stimuli are presented on a screen.

10. The method of claim 9, wherein the screen is selected from the group consisting of a computer screen, a video screen, and a projection screen.

11. The method of claim 1, wherein the visual stimuli are presented on a visual projection device.

12. The method of claim 11, where in the visual projection device includes virtual reality goggles or a helmet.

13. The method of claim 1, wherein the recording changes in the specified characteristics of the person'"'"'s visual field comprises recording at least one of responsiveness, color recognition, shape recognition, and localization of the visual stimuli by the person.

14. The method of claim 1, wherein at least one of the steps of locating and defining one or more zones of vision, defining a treatment area, displaying a frame, presenting visual stimuli, recording changes and iterating is controlled by a central data processing means.

15. The method of claim 1, wherein the recording changes includes recording changes in the person'"'"'s ability to discriminate visual stimuli presented either in a rapid succession or simultaneously.

16. The method of claim 15, wherein recording changes in the person'"'"'s ability to discriminate visual stimuli includes recording a change in at least one of the person'"'"'s ability to change a reaction time after appearance of a stimulus, the person'"'"'s ability to estimate time intervals between the appearance of two stimuli, and the person'"'"'s ability to discriminate time-connected patterns of stimuli.

17. The method of claim 1, wherein the retinal disease is glaucoma.

18. The method of claim 1, wherein the retinal disease is retinitis pigmentosa.

19. The method of claim 1, further comprising adjusting sizes of the visual stimuli according to a size of a zone to be treated.

20. The method of claim 1 further comprising crediting a reward account according to a desired patient performance.

21. The method of claim 1, further comprising presenting a priming stimulus.

22. The method of claim 1, further comprising:

adapting at least one of the specified locations and specified definitions of the visual stimuli according to the changes in specified characteristics of the person'"'"'s visual field.

23. The method of claim 22, wherein the adapting is performed automatically.

24. The method of claim 23, wherein the adapting is based on an accumulation of points.

25. The method of claim 24, wherein the points are awarded when responses of the person to the presenting the visual stimuli fulfill a criterion.

26. The method of claim 1, wherein the retinal disease is macular degeneration.

27. The method of claim 11, where in the visual projection device includes a head-mounted display.

28. A device for treating a retinal disease affecting a portion of a person'"'"'s visual field, the device comprising:

identifying means for locating and defining one or more zones of vision within the person'"'"'s visual field;

means for concurrently displaying, to the person, a plurality of fixation anchors lying within the person'"'"'s visual field and surrounding the affected portion of a person'"'"'s visual field;

means for presenting at least one optical stimulus;

means for entering the person'"'"'s response to the at least one optical stimulus;

controlling means for allowing a control of the means for presenting the at least one optical stimulus in accordance with the person'"'"'s response to the presentation of the at least one optical stimulus; and

central data processing means for recording, storing, processing and emitting data from the means for presenting, the means for concurrently displaying, the means for entering, and the controlling means.

29. The device of claim 28, the device further comprising:

means for defining a treatment area which is located within at least one of said zones of vision;

means for treating at least one zone of vision by presenting the at least one optical stimulus to the person'"'"'s visual field;

recordation means for recording changes in specified characteristics of the person'"'"'s visual system;

means for adapting a location and a definition of the at least one optical stimulus presented to said at least one zone of vision, according to said changes in specified characteristics of the person'"'"'s visual system; and

means for iterating at least the presenting at least one optical stimulus, the concurrently displaying a plurality of fixation anchors, the entering the person'"'"'s response, and the adapting a location and a definition continuously so as to improve the human'"'"'s overall visual system,

wherein the one or more zones of vision include a zone of intact vision and a transition zone.

30. The device of claim 29, wherein only the zone of intact vision is treated.

31. The device of claim 29, wherein the zone of intact vision and the transition zone are treated.

32. The device of claim 28, additionally comprising means for at least one of fixing and supporting the head of the human.

33. The device of claim 28, wherein the means for presenting are light emitting means.

34. The device of claim 33, wherein the light emitting means are emit light characterized by at least one of variable color, luminance, intensity, and shape.

35. The device of claim 33, wherein said light emitting means includes a screen.

36. The device of claim 35, wherein the screen is selected from a group consisting of a computer screen, a video screen, or a projection screen.

37. The device of claim 33, wherein said light emitting means includes a visual projection device.

38. The device of claim 37, wherein the projection device includes virtual reality goggles or a helmet.

39. The device of claim 28, wherein at least one point is a colored mark.

40. The device of claim 39, wherein said colored mark is of variable color.

41. The device of claim 28, wherein said controlling means allows a control of the means for presenting in accordance with a quality of the person'"'"'s response.

42. The device of claim 28, wherein said means for entering the person'"'"'s response includes a means for recording changes in the person'"'"'s ability to discriminate visual stimuli presented either in rapid succession or simultaneously.

43. The device of claim 42, wherein the means for recording changes in the person'"'"'s ability to discriminate visual stimuli includes a means for recording at least one of a person'"'"'s ability to change reaction time after appearance of a stimulus a person'"'"'s ability to estimate time intervals between the appearance of two stimuli, and a person'"'"'s ability to discriminate time-connected patterns of stimuli.

44. The device of claim 29, wherein the means for adapting is automatic.

45. The device of claim 44, wherein the means for adapting adapts the location and definition based on an accumulation of points.

46. The device of claim 45, wherein the points are awarded when responses of the person fulfill a criterion.

47. The device of claim 37, wherein the projection device includes a head-mounted display.

48. A method for treating the vision of a patient, the method comprising:

locating and defining one or more zones of vision within visual field of the patient;

defining a treatment area which is located within at least one of the zones;

concurrently displaying, to the patient, a plurality of fixation points lying within the person'"'"'s visual field;

treating the patient by presenting at least one visual stimulus to the treatment area at a specified location and with a specified definition;

recording changes in specified characteristics of the patient'"'"'s visual field;

automatically redefining the treatment area based on the recorded changes; and

iterating at least the concurrently displaying, treating the patient, recording the changes, and automatically redefining so as to improve the patient'"'"'s overall vision, wherein the iterating includes adapting the specified location and definition.

49. The method of claim 48, wherein the redefining is triggered based on accumulation of points.

50. The method of claim 49, wherein the points are awarded when responses of the patient to a presentation of the at least one optical stimulus fulfill a criterion.

51. A device for treating a retinal disease affecting a portion of a person'"'"'s visual field, the device comprising:

means for locating and defining one or more zones of vision within the person'"'"'s visual field, the one or more zones of vision including a zone of intact vision and a transition zone;

means for concurrently displaying, to a person, a plurality of fixation points lying within the person'"'"'s visual field;

means for presenting at least one optical stimulus;

means for entering the person'"'"'s response to a presentation of the at least one optical stimulus;

controlling means for allowing a control of the means for presenting the at least one optical stimulus in accordance with a response of the person to the presentation of the at least one optical stimulus; and

central data processing means for recording, storing, processing and emitting data from the means for presenting, the means for concurrently displaying, the means for entering the response, and the controlling means.

52. A device of claim 51, the device further comprising:

means for defining a treatment area located within at least one of said zones of vision;

means for treating at least one zone of vision presenting the at least one optical stimulus to the person'"'"'s visual field;

means for recording changes in characteristics of the person'"'"'s visual system;

means for adapting a location and a definition of the at least one optical stimulus presented to said at least one zone of vision, according to said changes in specified characteristics of the person'"'"'s visual system; and

means for iterating at least the presenting at least one optical stimulus, the concurrently displaying a plurality of fixation points, the entering the person'"'"'s response, and the adapting a location and a definition continuously so as to improve the human'"'"'s overall visual system.