Method and Apparatus for Controlling Peripheral Image Position for Reducing Progression of Myopia

• US 20070159601A1
• Filed: 01/11/2007
• Published: 07/12/2007
• Est. Priority Date: 01/12/2006
• Status: Active Grant

• Current Assignee: Brien Holden Vision Institute
• Original Assignee: Brien Holden Vision Institute
• Inventors: Sankaridurg, Padmaja, Holden, Brien, Ho, Arthur, Smith, Earl
• Granted Patent: US 7,665,842 B2
• Time in Patent Office: Days
• US Class Current: 351/221
• CPC Class Codes: A61F 2009/00872 Cornea
• CPC Class Codes: A61F 9/008 using laser
• CPC Class Codes: G02C 2202/24 Myopia progression prevention
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G02C 7/047 Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae

Abstract

A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing optical devices and methods comprising the repositioning of peripheral off-axis focal points relative to the retina to produce stimulus for influencing the progression of refractive error while simultaneously controlling the position of the central focal point near to the retina to provide clear central vision and simultaneously providing zones of controlled peripheral defocus and other optical aberrations to improve peripheral vision for select directions of gaze.

Claims

1. A method for reducing progression of refractive error comprising the steps of:

providing an optical vision treatment device comprising a vision treatment zone and at least one vision priority zone;

wherein said vision treatment zone is configured with a predetermined first optical design,

said first optical design selected to effect control of forward-backward positions of peripheral off-axis focal points relative to a retina;

said control of positions of peripheral off-axis focal points producing at least one substantially corrective stimulus for influencing progression of refractive error while substantially simultaneously controlling the forward-backward position of a central on-axis focal point near to near the retina and substantially simultaneously providing clear on-axis images; and

wherein said vision priority zone is configured with a predetermined second optical design;

said second optical design selected to control, for at least one direction of gaze a condition selected from the group consisting of;

peripheral defocus and other optical aberrations.

2. The method according to claim 1, wherein the step of controlling the forward-backward positions of peripheral off-axis focal points, for a vision treatment device that in combination with an eye exhibits astigmatism, further comprises the step of:

controlling the forward-backward positions of peripheral line foci produced by astigmatism relative to the retina.

3. The method according to claim 2, wherein the step of controlling the forward-backward positions of peripheral line foci further comprises the step of:

positioning a first peripheral line focus that is nearer to the cornea of the eye than a second peripheral line focus, to a distance from the cornea of the eye towards the peripheral retina, said distance being approximately less than or equal to the distance from the cornea to the peripheral retina.

4. The method according to claim 3, wherein at least one of said vision priority zone is configured to include a region of said vision treatment device, said region selected from the group consisting of:

the optical center;

the distance visual point;

the near visual point; and

combinations thereof.

5. The method according to claim 3, wherein at least one of said vision priority zone is configured to include the distance visual point and the near visual point on said vision treatment device.

6. The method according to claim 2, wherein the step of controlling the forward-backward positions of peripheral line foci further comprises:

positioning a first peripheral line focus that is further from the cornea of the eye than a second peripheral line focus, to a distance from the cornea of the eye towards the peripheral retina, said distance being approximately greater than or equal to the distance from the cornea to the peripheral retina.

7. The method according to claim 6, wherein at least one of said vision priority zone is configured to include a region of said vision treatment device, said region selected from the group consisting of:

the optical center;

the distance visual point;

the near visual point; and

combinations thereof.

8. The method according to claim 6, wherein at least one of said vision priority zone is configured to include the distance visual point and the near visual point on said vision treatment device.

9. The method according to claim 4, wherein a minimum width of said vision priority zone is approximately equal to or greater than the size of the entrance pupil of said eye.

10. The method according to claim 7, wherein a minimum width of said vision priority zone is approximately equal to or greater than the size of the entrance pupil of said eye.

11. An optical device comprising:

a vision treatment zone and at least one vision priority zone;

wherein said vision treatment zone is configured with a predetermined first optical design;

said first optical design selected to effect control of forward-backward positions of peripheral off-axis focal points relative to the retina of an eye while substantially simultaneously controlling the forward-backward position of a central on-axis focal point near to near the retina; and

wherein said vision priority zone is configured with a predetermined second optical design, said second optical design selected to control a condition selected from the group consisting of;

peripheral defocus and other optical aberrations.

12. The optical device according to claim 11, wherein said control of the forward-backward positions of peripheral off-axis focal points by said vision treatment zone further comprises controlling the forward-backward positions of peripheral line foci produced by astigmatism relative to the retina, for a vision treatment device that in combination with the eye exhibits astigmatism.

13. The optical device according to claim 12, wherein said control of the forward-backward positions of peripheral line foci by said vision treatment zone further comprises:

positioning a first peripheral line focus, which is nearer to the cornea of the eye than a second peripheral line focus, to a distance from the cornea of the eye towards the peripheral retina, said distance being approximately less than or equal to the distance from the cornea to the peripheral retina.

14. The optical device according to claim 13, wherein at least one of said vision priority zone is configured to include a region of said optical device, said region selected from the group consisting of:

the optical center;

the distance visual point;

the near visual point; and

combinations thereof.

15. The optical device according to claim 13, wherein at least one of said vision priority zone is configured to include the distance visual point and the near visual point on said optical device.

16. The optical device according to claim 12, wherein said control of the forward-backward positions of peripheral line foci by said vision treatment zone further comprises positioning a first peripheral line focus, which is further from the cornea of the eye than a second peripheral line focus, to a distance from the cornea of the eye towards the peripheral retina, said distance being approximately greater than or equal to the distance from the cornea to the peripheral retina.

17. The optical device according to claim 16, wherein at least one of said vision priority zone is configured to include a region of said optical device, said region selected from the group consisting of:

the optical center;

the distance visual point;

the near visual point; and

combinations thereof.

18. The optical device according to claim 16 wherein at least one of said vision priority zone is configured to include the distance visual point and the near visual point on said optical device device.

19. The optical device according to claims 14, wherein the minimum width of said vision priority zone is approximately equal to or greater than the size of the entrance pupil of an eye.

20. The optical device according to claim 17, wherein the minimum width of said vision priority zone is approximately equal to or greater than the size of the entrance pupil of an eye.

21. The optical device according to claim 17, wherein said optical design of said vision priority zone that includes the optical center of said optical device comprises an optical design for the control of spherical aberration.

22. A device comprising an optical lens system, said system comprising:

a vision treatment zone and at least one vision priority zone;

wherein said vision treatment zone is configured with a predetermined first optical design, said first optical design selected to effect the control of the forward-backward positions of peripheral line foci of astigmatism, whereby a first peripheral line focus that is nearer to the cornea of an eye than a second peripheral line focus, is positioned to a distance from the cornea of an eye towards the peripheral retina of the eye, said distance being approximately less than or equal to the distance from the cornea to the peripheral retina, while substantially simultaneously controlling a forward-backward position of an on-axis focal point near to the retina; and

wherein at least one of said vision priority zone is positioned to include the optical center of said lens system with said vision priority zone that includes the optical center being substantially simultaneously configured with a predetermined second optical design;

said second optical design selected to control at least one condition selected from the group consisting of;

defocus, spherical aberration, astigmatism and coma; and

wherein the minimum width of said vision priority zone that includes the optical center is approximately greater than or equal to the entrance pupil size of the eye.