A one piece intraocular lens and an intraocular lens include an optic
portion and a haptic portion formed from a copolymer that includes an
incorporated hydrophilic monomer and an incorporated alkoxyalkyl
methacrylate monomer. The optic and haptic portions of the one-piece
intraocular lens and intraocular lens are formed from the same copolymer.
The copolymer of intraocular lenses and preferred one-piece intraocular
lenses includes about 40 to about 95 percent by weight of the hydrophilic
monomer based on the total weight of the dry copolymer and about 5 to
about 60 percent by weight of the alkoxyalkyl methacrylate based on the
total weight of the dry copolymer. A blank for use in constructing an
intraocular lens includes a hydrogel in a shape suitable for finishing
into an intraocular lens. The hydrogel of the blank comprises a first
portion suitable for finishing into a haptic portion and a second portion
suitable for finishing into an optic portion. The first and second
portions of the blank are formed of the same or a different copolymer of a
hydrophilic monomer and an alkoxyalkyl methacrylate monomer, and the
amount of the hydrophilic monomer present in the copolymer of the first
portion of the blank ranges from about 60 to about 80 percent by weight
based on the total weight of the dry copolymer in the first portion.
Copolymers of the blank and one-piece intraocular lenses have an
equilibrium water content of from about 10 to about 38 percent by weight
based on the total weight of the hydrated copolymer.