| abstract |
Provided is a method capable of easily producing an ophthalmic lens material that has high oxygen permeability and at the same time has excellent surface water wettability, surface lubricity, water retention, contamination resistance, and biocompatibility. To do. A step (1) of irradiating the surface of an ophthalmic lens material with high-frequency plasma or excimer light, and a surface of the ophthalmic lens material subjected to the step (1) having at least one zwitterionic group A step (2) of contacting a hydrophilic monomer mixed solution further comprising a containing compound, water, an organic solvent and at least one specific chain transfer agent, and a state in which the hydrophilic monomer mixed solution of the step (2) is contacted The surface of the ophthalmic lens material is irradiated with ultraviolet rays having a wavelength of 250 to 500 nm, and the zwitterionic group-containing compound is graft polymerized onto the surface of the ophthalmic lens material to form a surface layer (3) A method for producing an ophthalmic lens material having a hydrophilic surface, characterized by comprising: and an ophthalmic lens material having a hydrophilic surface produced by the production method. [Selection figure] None |