Contact lens wherein central correction region has a center 0.2-

Details Contact lens wherein central correction region has a center 0.2- Contact lens wherein central correction region has a center 0.2-

1994-03-28

1995-06-06

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 704

Patent

active

054226872

ABSTRACT:
A presbyopia correction contact lens to be used in contact with a cornea of an eye of a wearer, the contact lens having a substantially circular central correction region and an annular outer correction region which surrounds the central correction region, the central and outer correction regions providing one and the other of a near vision correction region and a distance vision correction region, respectively, wherein the central correction region has a center which is offset by a distance of 0.2 mm-2.4 mm from a geometric center of the contact lens toward a side portion of the lens, which side portion is to be located on the side of the nose of the wearer when the contact lens is used in contact with the cornea, and the central correction region has a diameter within a range of 0.8 mm-3.5 mm.

REFERENCES:
patent: 4636049 (1987-01-01), Blaker
patent: 4752123 (1988-06-01), Blaker
patent: 4869587 (1989-09-01), Breger
patent: 5151723 (1992-09-01), Tajiri

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