Patent ID: 7584630
Filing Date: 2009-09-08
Classification: A61F,C09K,G02B

Abstract:
1. A photochromic ocular device selected from a contact lens and an intraocular device, comprising: (A) an organic polymeric material; and (B) at least one organic photochromic material able to change from a less radiation absorbing unactivated form to a more radiation absorbing activated form upon exposure to actinic radiation; wherein said photochromic ocular device upon exposure to actinic radiation exhibits a ratio of increased ultraviolet radiation absorbance to increased visible radiation absorbance of greater than 0.5:1.0 as measured in the Ultraviolet Photochromic Performance Test, and wherein the photochromic material of (B) is represented by Structure II: wherein, wherein —A is represented by the following formula: wherein —J is selected from: hydroxy; (meth)acryloxy; 2-(methacryloxy)ethylcarbamyl; epoxy; —OCH wherein x, y and z are the same as defined for —A; —U is a residue of an organic polyol having at least one hydroxyl group or a derivative of said residue, wherein at least one hydroxyl group has been reacted to form the group J provided that —U is not the same as —A when —J is hydroxy; wherein P is hydrogen or C