Bifocal contact lens

Details Bifocal contact lens Bifocal contact lens

1989-12-07

1990-11-20

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351177, G02C 704

Patent

active

049714325

ABSTRACT:
A bifocal contact lens includes a near vision portion having a first radius curvature and a far vision portion concentric with the near vision portion and having a second radius of curvature. A junction is formed where the near vision and far vision portions meet. This junction is polished to remove the sharp demarkation between far and near vision portions so that an annulus of multiple radii is formed where the two vision portions meet. This annulus prevents double vision associated with sharp junctions between far and near portions.

REFERENCES:
patent: Re25286 (1962-11-01), De Carle
patent: 4418991 (1983-12-01), Breger

Affiliated with

Also associated with

Rating

Bifocal contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bifocal contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bifocal contact lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-451365