Silicone (meth)acrylamide monomer, polymer, ophthalmic lens, and contact lens

A silicone (meth)acrylamide monomer expressed by the following general formula (a),

• wherein R represents a hydrogen atom or a methyl group;
• R1 represents an alkyl or an aryl group with between 1 and 20 carbon atoms which is further substituted with one or more groups selected from the group consisting of hydroxyl groups, acid groups, ester groups, ether groups, thiol groups and combinations thereof;
• R2 represents a C1-10 alkylene group or arylene group that may be substituted with hydroxyl groups, acid groups, ester groups, ether groups, thiol groups and combinations thereof;
• R3 to R9 independently represent a C1-4 alkyl group or an aryl group with between 1 and 20 carbon atoms, either of which may be substituted with fluorine, hydroxyl, acid, ester, ether, thiol and combinations thereof, and n is an integer in a range from 1 to 10.