Multifocal contact lens and method for preparing

Details Multifocal contact lens and method for preparing Multifocal contact lens and method for preparing

1993-03-31

1995-04-04

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351177, 351219, 351247, G02C 704, A61B 300

Patent

active

054041830

ABSTRACT:
A method for use in preparing a customized multifocal contact lens includes the step of providing a standard diagnostic contact lens having an annular portion with a concave cornea-fitting posterior surface and a central portion with a predetermined convex anterior surface and a concave aspherical posterior surface of predetermined eccentricity. The diagnostic contact lens is placed on the cornea of a patient's eye so that the fitting surface is in substantial contact with the cornea. The diagnostic contact lens is allowed to align itself with the cornea in an off-center position. Upon an alignment of the diagnostic contact lens in the off-center position, two or more test lenses are disposed in series before the patient's eye to determine a power curve with which the anterior surface of the central portion could be formed to provide optimal near and far vision for the patient.

REFERENCES:
patent: 3482906 (1969-12-01), Volk
patent: 4418991 (1983-12-01), Breger
patent: 4525043 (1985-06-01), Bronstein
patent: 4636049 (1987-01-01), Blaker
patent: 4640595 (1987-02-01), Volk
patent: 4752123 (1988-06-01), Blaker
patent: 4765728 (1988-08-01), Porat et al.
patent: 4883350 (1989-11-01), Muckenhirn
patent: 4890912 (1990-01-01), Visser
patent: 4936672 (1990-06-01), Capez
patent: 4971432 (1990-11-01), Koeniger
patent: 5046836 (1991-09-01), Volk
patent: 5181053 (1993-01-01), Brown
patent: 5200773 (1993-04-01), Volk

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