Process for the production of an intraocular lens

Details Process for the production of an intraocular lens Process for the production of an intraocular lens

1997-04-23

1999-07-20

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Reshaping or treatment of an optical preform

425808, B29D 1100

Patent

active

059252944

ABSTRACT:
A one-piece intraocular lens made entirely of three-dimensionally crosslinked polymethyl methacrylate is prepared by selectively press-stretching a lens blank at a temperature of 125 to 140.degree. C. in those areas around the periphery of the central effective optic area and from which the haptic portions are formed rendering areas more robust and less prone to fracture while the central effective optic area is not press-stretched. The lenses are durable to YAG laser irradiation.

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patent: 5246634 (1993-09-01), Ichikawa et al.
patent: 5269813 (1993-12-01), Yoshida et al.
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patent: 5674284 (1997-10-01), Chang et al.
patent: 5725574 (1998-03-01), Nguyen
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