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1. WO2020141375 - VISUAL RECEPTIVE FIELD ENHANCEMENT

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1. An ophthalmic device for enhancing or increasing the number of visual cues in the field of view of a patient,

wherein the ophthalmic device is configured to either project light into the central field of view of the patient or deviate light into the central field of view from a direction which is outside the patient's central field of view, and

wherein the projected or deviated light form visual cues.

2. An ophthalmic device according to claim l, wherein the number of visual cues is not enhanced or increased in a central zone of the central field of view of the patient and wherein the number of visual cues is enhanced or increased in a peripheral zone of the central field of view which is at least partially surrounding the central zone of the central field of view.

3. An ophthalmic device according to any of the preceding claims, wherein the visual cues appear to the patient at the same distance as other surrounding objects from his environment.

4. An ophthalmic device according to any of the preceding claims, wherein the device is an active optical means such as a projection system, configured to create and project the light into the field of view of the patient.

5. An ophthalmic device according to claim 4, wherein the device is a remote screen.

6. An ophthalmic device according to claim 4, wherein the device is virtual reality (VR) headset.

7. An ophthalmic device according to claim 4, wherein the device is an augmented reality (AR) system

8. An ophthalmic device according to any one of claims 1 to 3, wherein the device is a passive optical means for deviating light from different directions outside the central field of view of the patient into said patient's gaze direction, such as a contact or spectacle lens, comprising:

- multiple small refractive, diffractive and/or reflective elements, such as micro-prisms, mirrors or glitters, lenslets, or

- arrays of diffractive elements such as meta-surfaces.

9. An ophthalmic device according to claim 8, wherein the device is a contact or spectacle lens comprising microprisms and,

wherein the microprisms are located at least in one of a front surface of the lens, a back surface of the lens or are embedded into the lens.

10. An ophthalmic device according to claim 9, wherein the microprisms are distributed in lattice or concentric rings or randomly.

11. An ophthalmic device according to any one of claim 8 or 9, wherein the microprisms have different geometrical shapes.

12. An ophthalmic device according to any one of claims 8 to 11, wherein the microprisms in the lens increase in size in a peripheral direction of the lens.

13. An ophthalmic device according to any one of claims 8 to 12, wherein the microprisms in the lens increase in distribution density in a peripheral direction of the lens.

14. An ophthalmic device according to any one of claims 8 to 13, wherein the angular size of microprisms in the central field of view is between 5 and 0.16 degrees.

15. An ophthalmic device according to any one of claims 8 to 14, wherein the device comprises a right and a left optical means which are configured differently.

16. A method for preventing the emergence or progression of myopia of a patient, the method including:

using an ophthalmic device for enhancing or increasing the number of visual cues in the field of view of a patient according to any of the preceding claims.