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photochromic lens
(redirected from Photochromic Lenses)

    Also found in: Wikipedia 0.01 sec.
pho·to·chro·mic lens (ft-krmk)
n.
A light-sensitive eyeglass lens that automatically darkens in sunlight and clears in reduced light.
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The most convenient and effective way for spectacle wearers to protect their eyes is to wear photochromic lenses such as Transitions lenses which remain clear indoors and at night, but change tint to cut glare when worn outd ors, boosting comfort and reducing eye fatigue.
PROTECT YOUR EYES FROM THE SUN; ADVERTISEMENT FEATURE by Coventry Evening Telegraph (England)
Because the windshield blocks out most of the UV light, photochromic lenses will not work inside the car.
Smart sunglasses based on electrochromic polymers by Ma, Chao; Taya, Minoru; Xu, Chunye / Polymer Engineering and Science
As many cars in Dubai have tint, the windscreen will take away around 40 per cent of the UV risk, which makes photochromic lenses (which darken in sunlight) less effective in the car.
Trend over health by 7 Days (Dubai, United Arab Emirates)
 
 
 
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