Intraocular lens for posterior vaulting

Abstract

An intraocular lens has a lesser dimension longitudinally of haptics attached thereto than in the longitudinal direction to provide increased posterior vaulting for accommodation.

The inventors claim:  
     
         1 . An intraocular accommodating lens having haptics extending in a longitudinal direction between opposite portions of the equator of a capsular bag of an eye, said lens comprising: 
 an asymmetrical optic of substantially greater dimension transversely of said longitudinal direction and of lesser dimension in said longitudinal direction, and    haptics extending oppositely longitudinally from the optic to engage the equator of the capsular bag, said haptics having such lengths as to extend from respective capsular bag equator portions to attachment at opposite portions of the optic,    whereby increased posterior vaulting of the optic is provided by elongated haptics.    
     
     
         2 . An intraocular accommodating lens according to  claim 1 , wherein the optic comprises a full optical zone provided by the transverse extension of the optic.  
     
     
         3 . A lens according to  claim 1 , wherein said optic has a longitudinal dimension of about 4.5 mm and a transverse dimension of about 6.0 mm.  
     
     
         4 . A lens according to  claim 1 , wherein the optic has linear edge portions at longitudinally opposite sides thereof, and said haptics are hinged relative to said opposite linear portions.  
     
     
         5 . A lens according to  claim 4 , wherein said linear edge portions are indented from the periphery of the optic to enable elongation of the haptics.  
     
     
         6 . A lens according to  claim 4 , wherein the haptics are hingedly mounted to the optic by flexible portions thereof adjacent to the optic.  
     
     
         7 . A lens according to  claim 4 , wherein the haptics are hinged to the optic by grooved hinged portions of the haptics adjacent the optic.  
     
     
         8 . A lens according to  claim 3 , wherein said haptics have transversely extending peripheral loop portions for engagement in the capsular bag equator.  
     
     
         9 . A lens according to  claim 1 , wherein said optic is formed of one of (a) silicone, (b) acrylic, (c) hydrogel, (d) PMMA, (e) other optically clear material.  
     
     
         10 . A lens according to  claim 1 , wherein said loops are formed of one of (a) polyimide, (b) prolene, (c) polymethyl methacrylate.  
     
     
         11 . An optic according to  claim 1 , and further including: 
 a light-transmitting skirt disposed about at least a portion of the periphery of the optics for reduction of glare impinging upon the retina of the eye.    
     
     
         12 . An intraocular accommodating lens having haptics extending in a longitudinal direction between opposite portions of the equator of a capsular bag of an eye, said lens comprising: 
 an asymmetrical optic of substantially greater dimension transversely of said longitudinal direction than in said longitudinal direction,    said optic being sized to provide a full optical zone,    said optic having generally linear opposite edge portions extending transversely at opposite edges thereof, and    plate haptics joined to the optic at said linear edge portions, and extending oppositely longitudinally of the optic to engage opposite capsular bag equator portions,    whereby enhanced posterior vaulting of the optic is provided by elongated haptics.    
     
     
         13 . A lens according to  claim 12 , wherein said optic has a longitudinal dimension of about 4.5 mm and a transverse dimension of about 6.0 mm.  
     
     
         14 . A lens according to  claim 12 , wherein said linear edge portions are indented from the periphery of the optic to enable elongation of the haptics.  
     
     
         15 . A lens according to  claim 12 , wherein the haptics are hingedly mounted to the optic by flexible portions thereof adjacent to the optic.  
     
     
         16 . A lens according to  claim 12 , wherein the haptics are hinged to the optic by grooved hinged portions of the haptics adjacent the optic.  
     
     
         17 . A len s according to  claim 13 , wherein said haptics have transversely extending peripheral loop portions for engagement in the capsular bag equator.  
     
     
         18 . A lens according to  claim 12 , wherein said optic is formed of one of (a) silicone, (b) acrylic, (c) hydrogel, (d) PMMA, (e) other optically clear material.  
     
     
         19 . A lens according to  claim 17 , wherein said loops are formed of one of (a) polyimide, (b) prolene, (c) polymethyl methacrylate.  
     
     
         20 . An optic according to  claim 12 , and further including: 
 a light-transmitting skirt disposed about at least a portion of the periphery of the optics for reduction of glare impinging upon the retina of the eye.