High refractive index hydrophilic materials

A hydrophilic intraocular lens comprising at least one copolymer comprising:

• (a) a first monomeric subunit consisting of a polymerized (meth)acrylate group and an aliphatic carbon moiety that is substituted with two hydroxyl substituents,
• (b) a second monomeric subunit different from the first monomeric subunit comprising a polymerized (meth)acrylate group, at least one side group comprising (i) an aryloxy moiety comprising at least one halogen, and (ii) an aliphatic carbon moiety linking the aryloxy moiety with the polymerized (meth)acrylate group, wherein the aliphatic carbon moiety optionally comprises at least one hydroxyl substituent,
• (c) a third monomeric subunit different from the first and second monomeric subunits comprising a polymerized (meth)acrylate group and at least one alkoxyalkoxyalkyl side group,
• wherein the first monomeric subunit is about 30% to about 50%, by weight of the copolymer composition, the second monomeric subunit is about 20% to about 40%, by weight of the copolymer composition, and the third monomeric subunit is about 20% to about 40%, by weight of the copolymer composition.