Materials for use in accommodating intraocular lens system

Abstract

There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.

1 . An accommodating intraocular lens for implantation in an eye, the intraocular lens having an optical axis, said lens comprising:
 an anterior portion including an anterior optic; and   a posterior portion including a posterior optic having refractive power;   said anterior portion further comprising an anterior biasing element connected to said anterior optic;   said posterior portion further comprising a posterior biasing element connected to said posterior optic;   said anterior optic being mounted to move relative to said posterior optic along said optical axis between an accommodated position and an unaccommodated position in response to forces within the eye, said relative movement corresponding to a change in the combined power of the intraocular lens;   wherein said anterior optic and said posterior optic are positioned further apart when said anterior optic is in the accommodated position than when said anterior optic is in the unaccommodated position, and said anterior optic is biased toward said accommodated position in absence of external forces and   wherein at least one of the anterior optic and the posterior optic includes an aspheric surface.   
     
     
         2 . The accommodating intraocular lens of  claim 1 , wherein the anterior portion and said posterior portion being connected together by a continuous structure that extends from the anterior portion to the posterior portion for implantation in the eye. 
     
     
         3 . The accommodating intraocular lens of  claim 1 , the continuous structure spaced apart from the anterior or the posterior optic by a gap.