Material for fabrication of artificial intraocular lenses and ha

Details Material for fabrication of artificial intraocular lenses and ha Material for fabrication of artificial intraocular lenses and ha

1976-09-13

1978-07-25

Lesmes, George F.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351162, 428220, 428336, 428522, 5263297, B32B 2730, B32B 2736, G02C 704

Patent

active

041025679

ABSTRACT:
Lens material suitable for ophthalmological use including implantation in the eye as an intraocular lens and as an ultra thin contact lens. The lenses are fabricated of polymethylmethacrylate (hereinafter PMMA) which PMMA is characterized by its very high molecular weight and almost complete freedom from strain. The PMMA may optionally be lightly cross-linked. The lens material is characterized by good machinability, color uniformity, and optical quality. It is substantially strain free and free from warpage when fabricated into extremely thin lenses.

REFERENCES:
patent: 3263005 (1966-07-01), Emerick
patent: 3586423 (1971-06-01), Zeltzer
patent: 3711870 (1973-01-01), Deitrick
patent: 3776230 (1973-12-01), Neefe
patent: 3957362 (1976-05-01), Mancini et al.
Lowther, PMMA Material in Journal of the American Optometrists Association, Mar., 1976.

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