Patent ID: 7326423

Claim:
An intraocular lens comprising a polymer, wherein the polymer comprises at least one residue of a molecule comprising a molecular structure depicted by Formula I: A-N═N-Z I wherein A is an optionally substituted aryl radical and Z is the residue of a moiety selected from 2-pyrazolin-5-ones, dimedone (5,5-dimethyl-1,3-cyclohexanedione), acetoacetamides, malonamides, barbituric acid and 1,3-propanediones; with the provision that when Z is 2-pyrazolin-5-one, A is selected from wherein B is a divalent linking group selected from —CON(R 1 )—, —O—, —S—, and —N(SO 2 R 2 )—; L is selected from C 2 -C 8 -alkylene and —[CH 2 CH(R 3 )O] n —CH 2 CH(R 3 )—; L 1 is a C 1 -C 8 -alkylene group; m is selected from 0,1 and 2; n is 1, 2, or 3; R is hydrogen or one to three groups selected from C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy, halogen, cyano, nitro, thiocyano, trifluoromethyl, —COR 4 , —CO 2 R 5 , —SO 2 R 2 , —N(R 1 )COR 4 , —N(R 1 )SO 2 R 2 , arylazo, aryloxy, arylthio, heteroarylthio, —SO 2 N(R 1 )R 4 , —CON(R 1 )R 4 , succinimido, phthalimido, and phthalimidino; R 1 is selected from hydrogen, C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 3 -C 8 -alkenyl and aryl; R 2 is selected from C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl and aryl; R 3 is hydrogen or methyl; R 4 is selected from C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, aryl and hydrogen; R 5 is selected from C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, aryl and [CH 2 CH(R 3 )O] n CH 2 CH(R 3 )OR 6 ; R 6 is selected from hydrogen, C 1 -C 8 -alkyl, aryl, C 1 -C 8 -alkanoyloxy and C 1 -C 8 -alkoxycarbonyloxy; and Q is an ethylenically-unsaturated polymerizable group; wherein the molecule comprises at least one ethylenically-unsaturated polymerizable group (Q).