Progressive simultaneous vision optical lens for correcting pres

Details Progressive simultaneous vision optical lens for correcting pres Progressive simultaneous vision optical lens for correcting pres

1995-08-10

1997-12-16

Nelms, David C.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

623 6, G02C 704, A61F 216

Patent

active

056991410

ABSTRACT:
A progressive simultaneous vision optical lens for correcting presbyopia corresponding to a low addition is of the kind in which the curve representing the proximity (or power) P lies in an area between a lower envelope curve P.sub.inf and an upper envelope curve P.sub.sup having the following polynomial equations: ##EQU1## where h is the height relative to the axis of the optical lens, i.e. the radial distance from the latter. By appropriate choice of the coefficients A'.sub.i and A".sub.i, the near vision area is made relatively large. Applications include contact lenses, intraocular implants and intracorneal lenses.

REFERENCES:
patent: 4976534 (1990-12-01), Miege et al.
patent: 5530491 (1996-06-01), Baude et al.
English language specification corresponding to European Patent application No. 0611979.

Affiliated with

Also associated with

Rating

Progressive simultaneous vision optical lens for correcting pres does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Progressive simultaneous vision optical lens for correcting pres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progressive simultaneous vision optical lens for correcting pres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-211793