Intraocular Lens System and Method for Power Adjustment

• US 20100324671A1
• Filed: 08/09/2010
• Published: 12/23/2010
• Est. Priority Date: 08/31/2001
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: PowerVision, Inc. (Alcon Incorporated)
• Inventors: Shadduck, John H.
• Granted Patent: US 8,992,609 B2
• Time in Patent Office: Days
• US Class Current: 623/6.13
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1635 for changing shape
• CPC Class Codes: A61F 2002/169 Surrounding optic
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants

Abstract

An intraocular lens (IOL) that provides for optical power adjustment following its implantation, for example, for use in treating cataract patients. The lens body has first and second surface portions that bound at least one interior chamber or space that extends from the central optic portion to the lens periphery. The interior chamber or space has a microporous body that is intermediate inner and outer portions of the space. In one embodiment, the microporous body is capable of cooperating with an external Rf or light source to expose a charge to a charge-carrying fluid within the interior chamber. By this system, fluid flows are induced to alter the optical parameters of the lens.

Claims

1. An intraocular lens comprising:

a central optic portion for focusing light, the optic portion defining a first chamber;

a peripheral portion outward of the optic portion, the peripheral portion comprising a first polymer and defining a second chamber;

a selected fluid media disposed within the first and second chambers; and

a microporous body portion intermediate the first and second chambers, the microporous body portion selectively providing fluid communication of the selected fluid media between the first and second chambers,

wherein the peripheral portion further comprises a second polymer that undergoes dimensional change in response to light energy application, the dimensional change causing transfer of the selected fluid between the first and second chambers.

2. The intraocular lens of claim 1 wherein a portion of lens adjacent the first chamber comprises a deformable material for altering the shape of the optic portion.

3. The intraocular lens of claim 1 wherein a portion of lens adjacent the second chamber comprises a deformable material.

4. The intraocular lens of claim 1 wherein the second polymer is transparent to visible light.

5. The intraocular lens of claim 1 wherein the second polymer expands in a cross-sectional dimension in response to irradiation from a light source of a selected wavelength.

6. The intraocular lens of claim 1 wherein the second polymer contracts in a cross-sectional dimension in response to irradiation from a light source of a selected wavelength.

7. The intraocular lens of claim 1 wherein the second polymer defines a structure embedded in the peripheral portion.

8. The intraocular lens of claim 7 wherein the structure is adjacent the microporous body portion of the lens.

9. The intraocular lens of claim 7 wherein the structure is adjacent coincident surfaces about the first chamber of the lens.

10. The intraocular lens of claim 1 wherein the lens defines coincident surfaces on opposing sides of the first chamber, and at least one coincident surface has a non-uniform radius.

11. The intraocular lens of claim 1 wherein the lens defines coincident surfaces on opposing sides of the first chamber, and at least one coincident surface is configured with projecting shape structures.

12. The intraocular lens of claim 1 wherein the lens defines coincident surfaces on opposing sides of the first chamber, and both coincident surfaces are configured with projecting shape structures.

13. The intraocular lens of claim 1 wherein the selected fluid media has an index of refraction that matches that of the material of the optic portion.

14. The intraocular lens of claim 1 wherein the optic portion comprises an anterior wall having a thickness that varies along the radius of the lens.

15. The intraocular lens of claim 14 wherein the optic portion has a center and the optic portion is thicker adjacent to the peripheral portion than at the center.

16. The intraocular lens of claim 14 wherein the optic portion has a center and the optic portion is thinner adjacent to the peripheral portion than at the center.

17. An intraocular lens body comprising:

a first structure comprising a central optic portion defining anterior and posterior lens surfaces and a first chamber, the first structure comprising a first polymer that is selectively deformable to cause change in at least one of the anterior or posterior lens surfaces;

a second structure comprising a peripheral lens portion defining a second chamber;

a fluid permeable portion disposed between the first and second chambers and providing fluid communication therebetween;

a fluid media disposed in the first and second chambers,

wherein the second structure comprises a second polymer that changes dimension in response to light energy application thereto to transfer fluid media across the fluid permeable portion.

18. The intraocular lens of claim 17 wherein the second polymer is transparent to visible light.

19. The intraocular lens of claim 17 wherein the second polymer expands in a cross-sectional dimension in response to irradiation from a light source of a selected wavelength.

20. The intraocular lens of claim 17 wherein the second polymer contracts in a cross-sectional dimension in response to irradiation from a light source of a selected wavelength.