PROBLEM TO BE SOLVED: To provide a polymerizable ultraviolet absorbing pigment monomer which is suitable for industrial production, has high solubility in other copolymerizable monomers, and is for a useful intraocular lens material polymer.SOLUTION: A polymerizable ultraviolet absorbing monomer for an intraocular lens material polymer is a compound having a monohydroxybenzophenone backbone represented by the formula (1). (In the general formula (1), Ris a hydrogen atom, a hydroxy group, a carboxy group, a C1-8 alkyl group, a C1-8 alkoxy group, a sulfonate group or a benzyloxy group； Ris a hydrogen atom or a C1-4 alkoxy group； and Ris a (meth)acrylic ester group having alkylene, alkylene amide or alkylene ester.)
