Contact lens for oriented optical corrections

Details Contact lens for oriented optical corrections Contact lens for oriented optical corrections

1987-08-28

1989-01-03

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160R, 351160H, G02C 704, G02C 706

Patent

active

047952490

ABSTRACT:
The contact lens comprises a central optical zone and a peripheral zone for fastening the lens. For centering said lens the peripheral zone comprises two stabilizing bosses which are disposed on the horizontal stabilization axis of the lens. For large palpebral openings it may be preferable to use two pairs of bosses, whereby each pair comprises two bosses, disposed symmetrically to said axis of stabilization. For multifocal corrections it is possible to use a third boss, disposed on the vertical axis of the lens. These stabilizers allow a perfect centering of the lens, hindering its rotation and the use of very thin lenses.

REFERENCES:
patent: 4095878 (1978-06-01), Fanti
patent: 4211476 (1980-07-01), Brummel et al.
patent: 4268133 (1981-05-01), Fischer et al.

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