Photochromic lenses are optical lenses that darken on exposure to specific types
of light of sufficient intensity, most commonly ultraviolet (UV) radiation. In the ...
Dr. Gary Heiting outlines a buyer's guide to photochromic lenses (including
Transitions lenses) for eyeglasses and sunglasses that darken automatically ...
Photochromic lenses were originally developed in the 1960's and made from
glass. They worked a bit like pieces of old-fashioned, photographic film.
Compare Transitions Optical glasses online. Choose from Transitions Signature,
XTRActive, Drivewear and Vantage lenses for better vision.
Feb 27, 2016 ... A simple explanation of how photochromic (light-sensitive) eyeglass lenses
darken in the light and lighten in the dark.
May 20, 2012 ... ImpactX Photochromic lenses provide unique climatic management technology,
getting dark from low to high light transmission within a few ...
Glass photochromic lenses unlike plastic lenses have high index glass bifocals
fused into the photochromic lens blank. They are not able to make these higher ...
Transitions Lenses | Shop our Huge Selection of Eyewear with Transitions
Photochromic Adaptive Lenses, Available in Prescription & Non-Prescription.
Photochromic Lenses Explained - A Guide To The Advantages & Disadvantages
of Photochromic Lenses: Click Here>
And the best thing is that PhotoFusion<sup>®</sup> high- and mid-index self-tinting lenses
turn up to 2 times faster* from dark to clear than previous photochromic lenses ...