Ophthalmic devices

A method of making an ophthalmic device comprising

• (a) providing a monomeric mixture comprising (i) a major amount of one or more non-silicone-containing hydrophilic monomers, wherein the major amount of the one or more non-silicone-containing hydrophilic monomers present in the monomeric mixture is an amount greater than 50 weight percent, based on the total weight of the monomeric mixture;
• (ii) a crosslinking agent mixture comprising (1) one or more first crosslinking agents containing at least two ethylenically unsaturated reactive end groups, wherein the at least two ethylenically unsaturated reactive end groups are (meth)acrylate-containing reactive end groups and (2) one or more second crosslinking agents containing at least two ethylenically unsaturated reactive end groups wherein at least one of the reactive end groups is a non-(meth)acrylate reactive end group;
• and (iii) one or more hydrophilic polymers or copolymers comprising one or more hydrophilic units and a thio carbonyl thio fragment of a RAFT agent;
• (b) subjecting the monomeric mixture to polymerizing conditions to provide a polymerized device, and
• (c) hydrating the polymerized device, wherein the ophthalmic device has an equilibrium water content of at least about 45 weight percent.