Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Nonmechanical aftertreatment
Patent
1992-09-28
1994-05-31
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Nonmechanical aftertreatment
264 17, 264 27, B29D 1100
Patent
active
053167040
ABSTRACT:
Expansile hydrogel intraocular lenses are heated above their elastic deformation temperatures and deformed into an elongated configuration having at least one reduced dimension suitable for insertion through a small surgical incision. The lenses are allowed to cool in this configuration and retain the deformed shape prior to surgical implantation. Following implantation the lenses hydrate into an enlarged elastic form reassuming the original lens configuration of full capsule size.
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Packard, et al., "Poly-HEMA as a material for intraocular lens implantation: a preliminary report", British Journal of Ophthalmoolgy, 1981, 65, 585-587.
Richards Thomas P.
Wang Yading
Zhou Stephen O.
Kabi Pharmacia Ophthalmics Inc.
Lowe James
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