Patent ID: 7538146

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 a hydrophilic group, a polydimethylsiloxane segment and a poly(disubstituted siloxane) segment including a substituent selected from the group consisting of a partly fluorinated alkyl, an alkenyl, an aryl, a cyanoalkyl, an aminoalkyl, a hydroxyalkyl, alk-NH-alk-NH 2 , -alk-(OCH 2 CH 2 ) m —(OCH 2 ) p —OR 7 , and combinations thereof, wherein alk is alkylene, R 7 is hydrogen or C 1 -C 6 alkyl, m and p independently of one another are an integer from 0 to 10; (b) at least one hydrophilic monomer; 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.