Patent ID: 7423108

Claim:
An ophthalmic device comprising a polymeric composition that comprises units of a compound having a formula of wherein R 1 is selected from the group consisting of unsubstituted and substituted linear C 1 -C 10 alkyl groups, unsubstituted and substituted branched C 3 -C 10 alkyl groups, unsubstituted and substituted cyclic C 3 -C 10 alkyl groups, unsubstituted and substituted C 6 -C 24 aryl groups, and vinyl group wherein at least one R 1 group is vinyl; R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 are independently selected from the group consisting of unsubstituted and substituted linear C 1 -C 10 allkyl groups, unsubstituted and substituted branched C 3 -C 10 alkyl groups, unsubstituted and substituted cyclic C 3 -C 10 alkyl groups, and unsubstituted and substituted C 6 -C 24 aryl groups; L is an ethanediyl group; n, x, and z are positive integers; p is zero or a positive integer; and n−z≧0; provided that at least one of R 5 and R 6 is an unsubstituted or substituted C 6 -C 24 aryl.