INTRAOCULAR LENS AND METHOD OF ITS MANUFACTURE Russian patent published in 1998 - IPC

FIELD: manufacture of intraocular lens used for vision correction after removal of cataract. SUBSTANCE: lens allows protection of eye from harmful effect of close ultraviolet and violet light with wave length of 350-450 nm due to introduction into lens silicon material of addition from dihydroxide of silicon pyroporphyrin and dihydroxide of silicon tetrabenzoporphyrin in ratio of 10: 1. Addition is introduced in the amount of not more than 0.01 mas. % of material total weight in the course of mixing of components. EFFECT: higher efficiency. 2 cl, 2 dwg