| 摘要 |
A novel contact lens having improved gas permeability is disclosed which is formed from copolymerizing a mixture comprising: (a) a group 1 monomer which is a styrene or substituted styrene monomer, and (b) a group 2 monomer which is a monomer of the general formula: <IMAGE> (i) wherein R is hydrogen, methyl, ethyl, and R' is an alkyl, or a monomer of the general formula: <IMAGE> (ii) wherein n is 0 or 1, R is hydrogen, methyl or ethyl and R'' is hydrogen when n is 0 and hydrogen or hydroxyl when n is 1.
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