| abstract |
An ocular lens material comprising a polymer prepared by polymerizing a component containing a benzotriazole compound (A) represented by the formula (I):wherein X is hydrogen, a halogen, an alkyl having 1 to 3 carbons or an alkoxy having 1 to 3 carbons, R1 is an alkylene having 2 to 10 carbons, R2 is hydrogen, methyl or a halogenated methyl, R3 is hydrogen, an alkyl or an aryl, and each of R4 and R5 is independently an alkyl having 1 to 8 carbons. The material shows excellent ultraviolet-ray absorbing power and oxidation inhibiting power at the same time. |