PRODUCTION OF CONTACT LENS

摘要

PURPOSE:To easily obtain high oxygen permeability by removing a solvent having high compatibility from the polymer molding obtd. by subjecting a mixture obtd. by mixing a specific monomer compsn. and said solvent to a casting polymn. treatment. CONSTITUTION:The mixture obtd. by mixing the monomer compsn. which is polymerized to provide a contact lens material in a 1st stage and contains a crosslinking agent and the solvent having the high compatibility is subjected to the casting polymn. treatment to obtain the polymer molding. The solvent is then removed from the polymer molding obtd. in the 1st stage. The contact lens having the high oxygen permeability is thereby easily produced without degrading the various characteristics such as hardness and parallel ray transmittance so much.