INTRAOCULAR LENS HAVING EDGE CONFIGURED TO REDUCE POSTERIOR CAPSULE OPACIFICATION

• US 20110130833A1
• Filed: 11/22/2010
• Published: 06/02/2011
• Est. Priority Date: 12/01/2009
• Status: Abandoned Application

• Current Assignee: Alcon Research Limited (Nestle SA)
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Graham, William M., Huynh, Huong, Scott, James M., Van Noy, Stephen J.
• Application Number:
  US12/951,869
• Publication Number:
  US 20110130833A1
• Time in Patent Office: Days
• US Class Current: 623/6.49
• CPC Class Codes: A61F 2/16 Intraocular lenses
• 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 2002/009 for hindering or preventing attachment of biological tissue of bone tissue onto implantable joints A61F2002/30932
• CPC Class Codes: A61F 2002/1681 having supporting structure for lens, e.g. haptics

Abstract

An intraocular lens (IOL) for implantation within a capsular bag includes an optic and a plurality of haptics. The optics has an anterior optic face and a posterior optic face joined by a peripheral wall. The peripheral wall includes a straight portion of uniform width extending posteriorly from the anterior optic face to a flare point and a flared optic edge. The flared optic edge extends posteriorly and widens from the flare point and meets the posterior optic face at a sharp optic corner. Each of the haptics is coupled to the optic at the peripheral wall at respective haptic-optic junctions. The flared optic edge surrounds the peripheral wall between the haptic-optic junctions.

Claims

1. An intraocular lens (IOL) for implantation within a capsular bag, comprising:

an optic having an anterior optic face and a posterior optic face joined by a peripheral wall, the peripheral wall comprising a straight portion of uniform width extending posteriorly from the anterior optic face to a flare point and further comprising a flared optic edge, the flared optic edge extending posteriorly and widening from the flare point and meeting the posterior optic face at a sharp optic corner; and

a plurality of haptics, each of the haptics being coupled to the optic at the peripheral wall at respective haptic-optic junctions, wherein the flared optic edge surrounds the peripheral wall between the haptic-optic junctions.

2. The IOL of claim 1, wherein the flared optic edge has a height less than half of a thickness of the peripheral wall.

3. The IOL of claim 1, further comprising a plurality of flared haptic edges, each of the haptic edges extending posteriorly along a respective lateral side of one of the haptics and widening from a flare point, each flared haptic edge meeting a posterior face of the respective haptic at a sharp haptic corner, the sharp haptic corner being sufficiently rigid to resist deformation by the capsular bag.

4. The IOL of claim 3, wherein the flared haptic edges extend at least along an outer lateral side of a distal contact portion of each of the haptics.

5. The IOL of claim 3, wherein the flared haptic edges entirely surround the haptics.

6. The IOL of claim 3, wherein each of the flared haptic edges has a height less than half of a thickness of the respective haptic.

7. The IOL of claim 1, wherein the flared optic edge has a flare angle between 5 and 10 degrees.

8. The IOL of claim 1, wherein the sharp optic corner is sufficiently rigid to resist deformation by the capsular bag.

9. A method of manufacturing an intraocular lens (IOL), comprising:

forming a circular mold for a pre-milled IOL;

molding a refractive material in the circular mold to form the pre-milled IOL; and

removing the refractive material from the pre-milled IOL to form an IOL, the IOL comprising;

an anterior optic face and a posterior optic face joined by a peripheral wall, the peripheral wall comprising a straight portion of uniform width extending posteriorly from the anterior optic face to a flare point and further comprising a flared optic edge, the flared optic edge extending posteriorly and widening from the flare point and meeting the posterior optic face at a sharp optic corner, the sharp optic corner being sufficiently rigid to resist deformation by the capsular bag; and

a plurality of haptics, each of the haptics being coupled to the optic at the peripheral wall at respective haptic-optic junctions, wherein the flared optic edge surrounds the peripheral wall between the haptic-optic junctions.

10. The method of claim 9, wherein the flared optic edge has a height less than half of a thickness of the peripheral wall.

11. The method of claim 9, wherein the step of removing the refractive material further comprises forming a plurality of flared haptic edges, each of the haptic edges extending posteriorly along a respective lateral side of one of the haptics and widening from a flare point, each flared haptic edge meeting a posterior face of the respective haptic at a sharp haptic corner, the sharp haptic corner being sufficiently rigid to resist deformation by the capsular bag.

12. The method of claim 11, wherein the flared haptic edges extend at least along an outer lateral side of a distal contact portion of each of the haptics.

13. The method of claim 11, wherein the flared haptic edges entirely surround the haptics.

14. The method of claim 11, wherein each of the flared haptic edges has a height less than half of a thickness of the respective haptic.

15. The method of claim 9, wherein the flared optic edge has a flare angle between 5 and 10 degrees.