Cylindrically segmented zone of focus artificial hydrogel lens

Details Cylindrically segmented zone of focus artificial hydrogel lens Cylindrically segmented zone of focus artificial hydrogel lens

1988-10-17

1990-03-06

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Intraocular lens

A61F 216

Patent

active

049062468

ABSTRACT:
An implantable or contact hydrogel lens for replacement of a defective natural lens in an eye in which various annular portions of the lens have different powers and focal lengths to produce in-focus images, on different portions of the retina, of objects which are located at various distances from the eye, thereby substituting for the natural focusing action of the eye. The image processing capability of the brain functions to largely ignore the out of focus images and concentrate on the in focus image of the object selected by the brain for consideration.

REFERENCES:
patent: 4240163 (1980-12-01), Galin
patent: 4655565 (1987-04-01), Freeman
patent: 4666446 (1987-05-01), Koziol
patent: 4704016 (1987-11-01), de Carle
patent: 4795462 (1989-01-01), Grendahl

Affiliated with

Also associated with

Rating

Cylindrically segmented zone of focus artificial hydrogel 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 Cylindrically segmented zone of focus artificial hydrogel lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cylindrically segmented zone of focus artificial hydrogel lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-44621