Patent ID: 9574038
Date: 2017-02-21
CPC Classifications: B29C,B29K,B29L,C08F,C08G,C08L,G02B

Claim:
1. An optically clear silicone hydrogel contact lens comprising: a hydrated polymeric lens body that is the reaction product of a polymerizable composition comprising: a) at least 25 wt. % of at least one hydroxyalkyl methacrylate; and b) at least 20 wt. % of at least one HEMA-compatible polysiloxane represented by Formula (I): wherein R wherein the HEMA-compatible polysiloxane has an HLB value of at least 5, or has a hydroxyl group content of at least 1 wt. % based on the average molecular weight of the polysiloxane, or has both an HLB value of at least 5 and has a hydroxyl group content of at least 1 wt. %, wherein the wt. % of the hydroxyalkyl methacrylate and the HEMA-compatible polysiloxane is based on the total weight of polymerizable monomers in the composition, and wherein when Z is a C