Wettable silicone hydrogel compositions and methods for their manufacture
 Improved silicone-containing hydrogels with enhanced wettability comprising at least one silicone-containing prepolymer, and an equimolar amphoteric mixture of acid-containing comonomers and amine-containing comonomers are herein disclosed. 
Bausch & Lomb Incorporated
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Yu-Chan Paul J.
Lai Valint, Jr.