Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1982-04-14
1984-03-13
Frinks, Ronald L.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351 57, A61F 116, A61F 124
Patent
active
044358563
ABSTRACT:
The invention contemplates structure for surgical implantation within an eye and providing the user with more than one focal length, for viewing at correspondingly different object ranges. In the embodiments disclosed, one intraocular device is relatively fixed in the eye to provide a conventionally available viewing range, for example, distance viewing, and another lens element is movably mounted with respect to the fixed distance-viewing lens in such manner as to provide its selective use in combination with the fixed lens, for close-object viewing.
REFERENCES:
patent: 3752567 (1973-08-01), Broadhurst
patent: 4010496 (1977-03-01), Neefe
patent: 4056855 (1977-11-01), Kelman
patent: 4073014 (1978-02-01), Poler
patent: 4074368 (1978-02-01), Levy, Jr. et al.
patent: 4187006 (1980-02-01), Neidell
patent: 4257130 (1981-03-01), Bayers
patent: 4298996 (1981-11-01), Barnet
patent: 4315337 (1982-01-01), Choyce
patent: 4366582 (1983-01-01), Faulkner
patent: 4368958 (1983-01-01), Buget
Model PC-11 Posterior Chamber, American Medical Optics Advertisement-American Hospital Supply Corp. (4 pages) Aug. 1981.
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