A parade of PALs the race to fit the lens to the presbyope: A host of new lens-design methods took center stage at this year's Optical Laboratories Association meeting. (Presbyopia Report).

Review of Optometry, December, 2002 by Kirkner, Rich

Lens manufacturers have rolled out all kinds of new techno-terms to explain the science behind today's progressive addition lenses. Terms such as "Individual," "retina forward," "ray-tracing," etc. all describe different design methods lens manufacturers are employing to pursue the Holy Grail of presbyopic spectacle lens correction: distortion-free vision. Here's where they stand, based on what was on display or talked about at the Optical Laboratories Association meeting last month.

New Designs

Signet Armorlite Inc. The Kodak Precise Progressive is the latest lens design to utilize a proprietary technology, this one called "Vision First Design." This method reverses the traditional lens design methodology, SA says. Instead of calculating the...

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