Contact lenses utilizing keel orientation

Details Contact lenses utilizing keel orientation Contact lenses utilizing keel orientation

1988-04-22

1991-04-23

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160R, 351160H, G02C 704

Patent

active

050094971

ABSTRACT:
The invention relates to a variety of contact lens designs which attempt to achieve a stable lens orientation by providing such contact lenses with approximately circular profiled grooves or channels. These profiled tracks act as circular keels inhibiting translation and thereby aiding rotational stabilization of the lens.

REFERENCES:
patent: 4508436 (1985-04-01), Sittarle
patent: 4637697 (1987-01-01), Freeman
patent: 4640594 (1987-02-01), Brager

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