Method of producing annealed polyvinyl alcohol contact lens

摘要: Optically clear soft contact lenses of aqueous swollen solid polyvinyl alcohol having a weight average molecular at least 6,000, been annealed under crystallinity promoting conditions to effectively increase the elastic modulus lenses, and optionally subsequently crosslinked, methods preparation use thereof are disclosed. The characterized by their relatively high oxygen transmissibility, sufficient meet needs human cornea, optical clarity, improved hot water resistance superior mechanical properties.