Accommodating 360 degree sharp edge optic plate haptic lens
View Patent ↗An accommodating intraocular lens having an optic and portions extending from the optic radially outwards preferably with fixation devices at their distal ends, the optic designed such that it has a sharp posterior edge for 360 degrees of its perimeter and the lens designed such that the optic can move forward and backwards with constriction and relaxation of the ciliary muscle.
1. An accommodating intraocular lens wherein the lens comprises a uniformly flexible uniplanar lens body having normally anterior and posterior sides, including a flexible optic,
said lens body having two or more straight uniformly flat oblong plate like radially extending flexible portions each having one groove or hinge across the extending portions and adjacent the optic and which include laterally extending flexible fixation fingers at their outer ends which are made of material different from that of the extending portions such that the lens can move anteriorly with contraction of the ciliary muscle of the eye, the radially extending portions comprise flat plate haptics with thin narrow straight lateral edges and wider anterior and posterior surfaces than the narrow lateral edges and the groove or hinge is across the wider surface,
the optic having a sharp edge for 360 degrees on the posterior side of the optic, and
the lens being sized to be implanted into the capsular bag of the eye such that contraction of the ciliary muscle causes the lens within the capsular bag behind the iris to move forward towards the iris with its contraction.
2. An accommodating lens according to claim 1 wherein the lens is sized such that it is not to be in contact with the ciliary muscle through the capsular bag wall.
3. An accommodating lens according to claim 1 wherein the lens can move anteriorly and posteriorly.
4. An accommodating lens according to claim 1 , wherein the outer ends of the extending portions can move anteriorly and posteriorly relative to the optic.
5. An accommodating lens according to claim 1 , wherein internal elastic strain causes the lens to move anteriorly.
6. An accommodating lens according to claim 1 , wherein posterior capsule elasticity can cause the lens to move anteriorly.
7. An accommodating lens according to claim 1 , wherein the optic can move forward and backwards with ciliary muscle contraction and relaxation.
8. An accommodating lens according to claim 1 , in which the optic and extending portions are made from different materials.
9. An accommodating lens according to claim 1 , wherein the extended portions are plate haptics and have hinges.
10. An accommodating lens according to claim 9 , wherein the plate haptics have a widening of the plate junctions adjacent to the optic.
11. An accommodating lens according to claim 1 , wherein constriction of the ciliary muscle can produce forward movement of the lens optic within the capsular bag towards the iris for near vision.
12. An accommodating lens according to claim 1 , wherein the plate haptics have raised fixation members at their outer ends on either or both surfaces.
13. An accommodating lens according to claim 1 , wherein the one of a groove or hinge across the plate haptic adjacent to the optic is on the anterior side thereof.
14. An accommodating lens according to claim 1 , wherein the extending portions have distal ends with corners, the corners having knobs.
15. An accommodating lens according to claim 1 , wherein the extending portions include hinged plate haptics with laterally extending flexible fingers.
16. An accommodating lens according to claim 1 , wherein the optic is located posteriorly to the outer ends of the extending portions.
17. An accommodating lens according to claim 1 , wherein the extending portions comprise plates flexible throughout their length whereby the optic is anterior to the outer ends of the plates.
18. An accommodating lens according to claim 1 , wherein the optic is biconvex.
19. An accommodating lens according to claim 1 , wherein the optic has a relatively flat front surface and a posterior surface with a smaller radius of curvature.