| abstract |
(57) [Problem] To provide a monomer for a polymer having high oxygen permeability and low elastic modulus. Further, it is intended to provide a polymer comprising the monomer and an ophthalmic lens. A monomer represented by the following formula (a): Embedded image [In the formula (a), R represents H or a methyl group. A represents a siloxanyl group. n represents an integer of 4 to 20. ] |