Patent ID: 7217778
Filing Date: 2007-05-15
Classification: A61L,C08G,G02B

Abstract:
1. Intra-ocular lens comprising a cross-linked polysiloxane having a refractive index of at least 1.4, said polysiloxane comprising a clustered configuration of refractive index modifying groups chemically bonded to the polysiloxane backbone via an alkanediyl-bridge such that one alkanediyl-bridge binds at least two refractive index modifying groups to said backbone, wherein the refractive index modifying groups are independently selected from the group consisting of aromatic groups, aryl groups, arylalkyl groups, cycloalkyl groups, and branched alkyl groups, and wherein said polysiloxane comprises a copolymer derived from a (co)-polymerization reaction between a cyclic siloxane monomer comprising a clustered configuration of reactive index modifying groups and a cyclic siloxane co-monomer or siloxane polymer.