The present invention is a contact lens treatment solution containing the following copolymer A and copolymer B in a ratio of A/B=40/1 to 5/1 (by weight). According to the present invention, there can be provided a contact lens treatment solution capable of removing dirt having adhered to contact lens surfaces, capable of improving lubricity of contact lens surfaces and capable of imparting persisting hydrophilicity to contact lens surfaces, by simple immersion treatment.
Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by formula (1) and a monomer (b) represented by formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 (by mol), and having a weight-average molecular weight of 400,000 to 800,000. Copolymer B: a copolymer obtained by copolymerization of a monomer (a) represented by the formula (1) and a monomer (b) represented by the formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=2/1 to 8/1 (by mol), and having a weight-average molecular weight of 1,000,000 to 1,500,000.