Reverse progressive lenses

Details Reverse progressive lenses Reverse progressive lenses

2009-12-28

2010-11-16

Sugarman, Scott J (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S177000

Reexamination Certificate

active

07832861

ABSTRACT:
A method of making a reverse progressive lens has the steps of selecting a standard progressive lens having a distance zone, a transition zone and a near zone; selecting an add determination that is double or more than double in power; reversing the regular progressive lens by orienting it upside down; and cutting away the near zone so that the transition zone becomes the new near zone. To maintain convergence of the corridor channel, one by orders the OS lens with the OD power and the OD lens with the OS power. The method also includes measuring a distance PD, measuring the segment height and keeping the same cylinder axis such that rotating the lens 180° does not change the axis position. Selecting a standard progressive lens may include one with a distance zone, a corridor/transition zone and a near zone.

REFERENCES:
patent: 5984473 (1999-11-01), Livnat
patent: 2008/0284977 (2008-11-01), Huang

Affiliated with

Also associated with

Rating

Reverse progressive lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4190479