| 摘要 |
A water-absorptive contact lens is prepared by polymerizing a monomer mixture containing a monomer having a ketalized glycitol and a hydrophilic monomer and/or a hydrophobic monomer, and after forming the resulting copolymer into a contact lens, treating the contact lens with an acid to convert the ketal groups into hydroxyl groups and replacing the acid in the lens with water or saline. The contact lens has excellent oxygen permeability and affinity for the eye and can be worn continuously for a long period of time. |
