Accommodative intraocular lens and method of improving accommodation
The present invention provides an accommodative intraocular lens (AIOL) system and method for improving accommodation with an intraocular lens. The method involves insertion into the capsular bag of a flexible optic holder comprising a plurality of haptics configured to allow the capsular bag to be sectioned at regular intervals following fusion of the capsular bag. The haptics of the optic holder are designed to allow maximum fusion of the anterior and posterior leaves of the capsular bag following placement of the optic holder in the capsular bag. Following introduction of the optic holder into the capsular bag, the natural or assisted process of fibrosis/fusion of the capsular bag occurs, thereby sealing and securely capturing the haptics within the capsular bag. Subsequently, several cuts are made in the fibrotic capsular bag at intervals between haptics, allowing the haptics to move independently, thereby effectively restoring some of the flexibility that the capsule possessed prior to fibrosis and restoring some of the zonular force on the capsule.
1. A method for improving accommodation of an intraocular lens system in an eye, the method comprising:
(a) providing the intraocular lens system comprising a plurality of spaced radial haptics;
(b) positioning at least a portion of the system in a capsular bag of the eye;
(c) allowing anterior and posterior leaves of the capsular bag to fuse; and
(d) making a plurality of substantially radial cuts in the fused anterior and posterior leaves of the capsular bag to produce sections each containing a haptic.
2. The method of claim 1 , wherein the system comprises an optic and an optic holder, the method further comprising inserting the optic into the optic holder after the capsular bag has fused.
3. The method of claim 1 , wherein said intraocular lens system comprises an optic holder comprising the plurality of radial haptics.
4. The method of claim 1 , wherein said plurality of haptics are regularly spaced and define sectioning intervals therebetween for the substantially radial cuts.
5. The method of claim 1 , further comprising maintaining the eye in an unaccommodative state during the fusion of the capsular bag.
6. The method of claim 1 , further comprising maintaining the eye in an accommodative state during the fusion of the capsular bag.
7. The method of claim 5 , wherein maintaining the unaccommodative state comprises administering an agent to inhibit accommodation.
8. The method of claim 7 , wherein said agent comprises atropine.
9. The method of claim 6 , wherein maintaining the accommodative state comprises administering an agent to promote accommodation.
10. The method of claim 9 , wherein said agent comprises pilocarpine.
11. The method of claim 1 , wherein the capsular bag fuses within about 1 to about 6 weeks.
12. The method of claim 1 , wherein the capsular bag fuses within about 2 to about 4 weeks.
13. The method of claim 1 , wherein said cuts extend from a visual axis to an edge of the fused capsular bag.
14. The method of claim 1 , wherein the system comprises an optic and an optic holder, and wherein both the optic and the optic holder are positioned in the capsular bag prior to fusion.
15. The method of claim 1 , wherein the system comprises an optic and an optic holder, the method further comprising releasably securing the optic in the optic holder.
16. The method of claim 1 , wherein said plurality of haptics comprises no more than 120 haptics.
17. The method of claim 1 , wherein the system further comprises a restricting device configured to maintain the haptics in a specific state of accommodation during fusion of the capsular bag.
18. The method of claim 1 , wherein the system further comprises a retainer adapted to achieve a desired capsular disc size.
19. The method of claim 1 , wherein the plurality of substantially radial cuts comprises a plurality of single cuts between the plurality of radial haptics.
20. The method of claim 1 , wherein each haptic comprises a closed-loop structure.