Start Methods of accommodating

Methods of accommodating

This invention relates to novel shape memory devices, materials and capsular shaping elements (CSEs) that can be implanted using conventional techniques to create a biomimetic lens capsule complex.

(See .) The vast majority of cataract patients must wear prescription eyeglasses following surgery to see properly.

In conventional cataract surgery as depicted in , the crystalline lens matrix is removed leaving intact only the thin walls of the anterior and posterior capsules—together with zonular ligament connections to the ciliary muscles.

The crystalline lens core is removed by phacoemulsification through a curvilinear capsularrhexis as illustrated in next illustrates the capsular sac and the prior art 3-piece IOL after a healing period of a few days to weeks.

The crystalline lens matrix is completely lost—and the integrity of the capsular sac is reduced by the capsularrhexis. 5,496,366; 5,674,282; 6,197,059; 6,322,589; 6,342,073; 6,387,126) describe the hinged haptics as allowing the lens element to be translated forward and backward in response to ciliary muscle contraction and relaxation within the shrink-wrapped capsule. However, the medical monitor for the Crysta Lens AT-45 in Phase I FDA trials explained in an American Society of Cataract and Refractive Surgeons (ASCRS) presentation, when asked about movement of AT-45's hinged haptics, that the AT-45 was not “moving much” at the optic and hinge.