| abstract |
A transparent ocular lens material comprising a silicon-containing polymer having a recurring unit represented by the general formula (I): <IMAGE> (I) wherein each of R1, R2, R3 and R4 is independently hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or a group represented by the general formula (lI): <IMAGE> (II) in which each of R5, R6 and R7 is independently an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or phenyl group. The ocular lens material has excellent transparency, high oxygen permeability and heat resistance, and excellent ultraviolet-ray absorbing properties and forming and processing properties, and has a relatively high refractive index. |