Patent ID: 7790824

Claim:
An ophthalmic device material comprising a) two polymerizable monomers of structure (I): wherein: X is H or CH 3 ; m is 0-6; Y is nothing, O, or O(CH 2 CH 2 O) n ; n is 1-6; w is 0-6, provided that m+w≦8; and Ar is phenyl which can be unsubstituted or substituted with CH 3 , C 2 H 5 , n-C 3 H 7 , iso-C 3 H 7 , OCH 3 , C 6 H 11 , Cl, Br, C 6 H 5 , or CH 2 C 6 H 5 ; and b) a polymerizable cross-linking agent; and c) 2-20% by weight of a non-polymerizable propylene oxide-ethylene oxide-propylene oxide block copolymer surfactant having a molecular weight of approximately 3600 and an ethylene oxide unit content of approximately 40% by weight.