Abstract: 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: ##STR1## wherein R is hydrogen, methyl, ethyl, and R' is an alkyl, or a monomer of the general formula: ##STR2## 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.
Abstract: Contact lenses and a method of preparing the same in which a central area tinted with particular polymer bound or water insoluble colorants are disclosed.