| 摘要 |
PURPOSE: Provided is a contact lens, which comprises material excellent in hardness, oxygen permeability, feeling of wearing, and has structure forming a central thick optic part and a thin vicinal part by a multicurve. CONSTITUTION: The material of the contact lens contains a compound(formula 5) as a main material produced by polymerizing monomers of methyl methacrylate, N-vinyl-2-pyrolidone, N-methyl-3-methylene-2-pyrolidone, and 3-hydroxy propyl methacrylate in the presence of ethylene glycol dimethacrylate as a crosslinking agent and azo bis isobutyronitrile as an initiator. The structure of the contact lens comprises a convex part and a concave part forming bent curve, wherein the convex part forms the multicurve comprising a power curve, a vicinity curve, an edge curve, a convex lens power curve. In the formula, n1+n2+n3+n4 is 1.
|
