Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Intraocular lens
Patent
1985-10-28
1987-06-16
Frinks, Ronald L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Intraocular lens
A61F 216
Patent
active
046734066
ABSTRACT:
A one-piece implantation lens is provided as a replacement for a natural lens which has been surgically, particularly extracapsularly, removed from the eye of living beings of a higher order and which has, on the one hand, a central lens body designed as a collective lens and, on the other hand, holding means in the form of thin-walled, flat support elements arranged peripherally on the lens body, radially extending outwardly from the lens body and fixing it in place, with the outer edge of the support elements lying on a circular arc around the center of the lens body; and which consists of a homogenous, crystal-clear, high-temperature resistant plastic, preferably vulcanized silicone, with a specific gravity of between 1.01 and 1.08, preferably approximately 1.02, wherein at least one of the two surfaces of the central lens body is in the form of the optically effective surface of a Fresnel lens.
REFERENCES:
patent: 4010496 (1977-03-01), Neefe
patent: 4074368 (1978-02-01), Levy, Jr. et al.
patent: 4210391 (1980-07-01), Cohen
patent: 4242762 (1981-01-01), Tennant
patent: 4424597 (1984-01-01), Schlegel
Frinks Ronald L.
Inprohold Establishment
Ruzek Peter R.
Teltscher Erwin S.
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