Haptic devices for intraocular lens

Abstract

A haptic for fixation to, and manufacture in conjunction with, an intraocular lens to be implanted in the natural lens capsule of the human eye is disclosed. The haptic secures the lens in an appropriate position within the natural capsule so as to provide optimal visual acuity through the aphakic lens. The haptic is designed to position the lens neutrally, anteriorly or posteriorly within the lens envelope. The haptic has an anterior retention ring and a posterior retention ring.

1 . An intraocular lens, comprising:
 an optic;   a plurality of haptic arms extending from the optic;   an annular ring coupled to the plurality of arms, wherein the annular ring is comprised of an anterior retention ring and a posterior retention ring;   and at least one orientation tab coupled to the annular ring and indicating the proper alignment of the intraocular lens when placed in an eye.   
     
     
         2 . The intraocular lens of  claim 1 , wherein the anterior retention ring and the posterior retention ring are separated by a plurality of haptic pillars. 
     
     
         3 . The intraocular lens of  claim 2 , wherein each haptic pillar is coupled to one haptic arm. 
     
     
         4 . The intraocular lens of  claim 2 , further comprising gaps between the haptic pillars. 
     
     
         5 . The intraocular lens of  claim 1 , which is comprised of a hydrophilic acrylic, hydrophobic acrylic, silicone, or combinations thereof. 
     
     
         6 . The intraocular lens of  claim 1 , which is comprised of a material for insertion into a human eye. 
     
     
         7 . The intraocular lens of  claim 1 , further comprising a haptic ribbon coupling the optic to the haptic arms. 
     
     
         8 . The intraocular lens of  claim 7 , wherein the haptic ribbon has one or more rounded corners. 
     
     
         9 . The intraocular lens of  claim 1 , wherein each orientation tab extends into the annular ring. 
     
     
         10 . The intraocular lens of  claim 1 , wherein each orientation tab extends into the annular ring. 
     
     
         11 . The intraocular lens of  claim 1 , wherein each haptic arm extends from a circumference of the option to an inner surface of the annular ribbon. 
     
     
         12 . The intraocular lens of  claim 1 , wherein the optic and the annular ribbon are coaxial. 
     
     
         13 . The intraocular lens of  claim 1 , wherein the plurality of haptic arms define openings between the annular ribbon and the optic. 
     
     
         14 . The intraocular lens of  claim 13 , wherein the openings have a smaller radial width than circumferential length. 
     
     
         15 . The intraocular lens of  claim 1 , wherein the annular ribbon is comprised of an anterior haptic ring and a posterior haptic ring connected at an apex of a “U” shaped recess in an outer circumferential surface of the annular ribbon. 
     
     
         16 . The intraocular lens of  claim 15 , wherein the posterior haptic ring is coupled posteriorly to the anterior haptic ring. 
     
     
         17 . The intraocular lens of  claim 1 , wherein the annular ribbon has a kidney shaped cross section. 
     
     
         18 . The intraocular lens of  claims 1 , which is adapted to be compressed by an instrument to allow insertion into the eye. 
     
     
         19 . The intraocular lens of  claim 1 , wherein the annular ribbon, when inserted into the eye, is adapted to move in response to movement of a ciliary process. 
     
     
         20 . The intraocular lens of  claim 19 , wherein movement of the annular ribbon provides focal accommodation.