Accommodating Intraocular Lenses

Abstract

An accommodating intraocular lens is provided in which a deflectable lens element is anchored to a substrate along its optical axis to define a fluid filled space. Fluid-filled haptics disposed in fluid communication with the space vary the fluid volume in the space responsive to forces applied by the ciliary muscles, thereby causing the periphery of the lens element to deflect relative to the substrate and changing the optical power of the intraocular lens.

What is claimed is: 
     
         1 . An accommodating intraocular lens comprising:
 an optic comprising a flexible anterior element secured to a posterior element, an optical axis, the flexible anterior element is the most anterior aspect of the accommodating intraocular lens along the optical axis, the flexible anterior element and the posterior element at least partially defining an optic fluid chamber disposed between the flexible anterior element and the posterior element;   a haptic portion peripheral to the optic portion and configured to deform in response to ciliary muscle movement, the haptic portion comprising at least one haptic fluid chamber in fluid communication with the optic fluid chamber; and   a fluid disposed within the optic fluid chamber and the at least one haptic fluid chamber, wherein the fluid is adapted to be moved between the at least one haptic fluid chamber and the optic fluid chamber in response to deformation of the haptic portion.   
     
     
         2 . An accommodating intraocular lens comprising:
 an optic comprising a flexible anterior element secured to a posterior lens portion, an optical axis, the flexible anterior element is the most anterior aspect of the accommodating intraocular lens along the optical axis, the flexible anterior element and the posterior lens portion at least partially defining an optic fluid chamber disposed between the flexible anterior element and the posterior lens portion, the posterior lens portion including at least one extension extending peripherally from the optic portion;   a haptic portion peripheral to the optic portion and configured to deform in response to ciliary muscle movement, the haptic portion comprising at least one haptic fluid chamber in fluid communication with the optic fluid chamber, the at least one extension secured to the haptic portion; and   a fluid disposed within the optic fluid chamber and the at least one haptic fluid chamber, wherein the fluid is adapted to be moved between the at least one haptic fluid chamber and the optic fluid chamber in response to deformation of the haptic portion.   
     
     
         3 . The accommodating intraocular lens of  claim 2 , wherein the at least one extension extends into an opening formed in the haptic portion. 
     
     
         4 . An accommodating intraocular lens comprising:
 an optic portion comprising
 a flexible anterior and a posterior element, an optical axis, the flexible anterior element being the most anterior aspect of the accommodating intraocular lens along the optical axis, the flexible anterior element and the posterior element at least partially defining an optic fluid chamber disposed between the flexible anterior element and the posterior element; 
   a haptic portion peripheral to the optic portion and configured to deform in response to ciliary muscle movement, the haptic portion comprising at least one haptic fluid chamber in fluid communication with the optic fluid chamber;   a plurality of spacers disposed between the optic fluid chamber and the, at least haptic fluid chamber, the plurality of spacers defining a plurality of fluid channels between the optic fluid chamber and the at least haptic fluid chamber to allow for the passage of fluid between the optic fluid chamber and the at least haptic fluid chamber; and   a fluid disposed within the optic fluid chamber and the at least one haptic fluid chamber, wherein the fluid is adapted to be moved between the at least one haptic fluid chamber and the optic fluid chamber through the plurality of fluid channel in response to deformation of the haptic portion.   
     
     
         5 . The accommodating intraocular lens of  claim 4  wherein the haptic portion has an annular configuration.