Intraocular lens with shape memory and its preparation.

摘要

The invention pertains to an intraocular lens with shape memory and its preparation. The intraocular lens according to the invention consists of a polymer or copolymer having a glass-transition temperature (Tg) of 40 - 60 DEG C. It preferably consists of a copolymer of methyl methacrylate with butyl methacrylate, 2-hydroxyethyl methacrylate and/or methacrylamide. Shaping is done either by polymerization within a suitable mold or by shape cutting of the resulting polymer. This hard intraocular lens can be deformed into a shape suitable for operation, advantageously to a straight or bent rod with a diameter of 1 to 4 mm which allows a suture-free insertion into the human eye.