Patent ID: 7468398

Claim:
A contact lens comprising a polymeric material formed from a prepolymerization mixture including: (a) at least one siloxane-containing macromer, wherein said at least one siloxane-containing macromer comprises at least two different hydrophilic groups and a poly(disubstituted siloxane) segment, wherein said hydrophilic groups are selected from the group consisting of polyoxyethylene, urethane, urea, amide, amine, hydroxyl and combinations thereof; (b) at least one hydrophilic monomer selected from the group consisting of N, N-dimethylacrylamide, hydroxyl-substituted C 1 -C 6 alkylacrylate, hydroxyl-substituted C 1 -C 6 alkylmethacrylate, N-vinylpyrrolidone, and combinations thereof; and (c) a cross-linking agent, the contact lens characterized by having a tensile modulus of less than about 3.0 MPa and producing less than 10% corneal swelling after a period of wear of 7 days including normal sleep periods.