Accommodating or focusable contact lens

Details Accommodating or focusable contact lens Accommodating or focusable contact lens

2011-01-11

2011-01-11

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S16000R

Reexamination Certificate

active

07866815

ABSTRACT:
An “accommodating contact lens” or “focusable contact lens” is a contact lens comprised of a single unit lens, primarily of a rigid gas permeable material, that has one optical power ground into the lens and is fitted for the eye for clear vision at distance when the eye is in a relaxed, unaccommodated state. Unlike a standard single vision, rigid gas permeable contact lens, it has a modified anterior surface, which exists as either an excavated, concave region or heaped ridge running the entire circular midperipheral to peripheral region of the contact lens, that allows the eyelids a contact point on the lens to re-shape or move the contact lens either by squeezing or lifting it anteriorly from the eye during an attempt to accommodate or focus at near, in order to provide to the eye additional power and clear vision at intermediate or near distances.

REFERENCES:
patent: 4702573 (1987-10-01), Morstad
patent: 5764339 (1998-06-01), Horton
patent: 7559650 (2009-07-01), Iuliano
patent: WO 91/10154 (1991-07-01), None

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