photochromic lens

(redirected from Photochromic Lenses)

pho·to·chro·mic lens

a light-sensitive spectacle lens that reduces light transmission in sunlight and increases transmission in reduced light.

pho·to·chro·mic lens

(fō'tō-krōm'ik lenz)
A light-sensitive spectacle lens that reduces light transmission in sunlight and increases transmission in reduced light.
References in periodicals archive ?
Photochromic lenses Varilux with the "Transitions" coating and the multifunctional coating Crizal provide comfortable vision in any weather.
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.
Because the windshield blocks out most of the UV light, photochromic lenses will not work inside the car.
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.
The ferry lookout, who was 60 and slightly short-sighted, was wearing glasses with photochromic lenses which "effectively reduced his ability to see small lights by at least 20%", the report added.
Managing director Dr Brendan Catlow said the company had been making dyes for photochromic lenses since the mid-1990s.
Opt for photochromic lenses that will change according to the amount of light.
Photochromic lenses (the ones that darken or lighten depending on the ambient light) are good if you run in and out of shady and sunny areas.
The extra cost of photochromic lenses can be worth the expense since they do away with the need for two pairs of specs.
PPG") is currently in discussions with Essilor International ("Essilor") relating to the future of PPG's and Essilor's joint venture, Transitions Optical, a leading provider of photochromic lenses to optical manufacturers worldwide and a consolidated subsidiary of PPG.
Commenting on the findings, which were published in Ophthalmology earlier this year, senior lecturer in optometry at Aston University, Dr Nicola Logan, told OT that the five-year data shows "significant reductions in the short-term side effects of blurred near vision and dilated pupils that require the use of reading spectacles and photochromic lenses with the higher doses.
Its comprehensive portfolio of spectacle lenses targeted at the varying needs of consumers from anti-fog, sun protection to photochromic lenses saw Essilor quickly gain awareness and interest among consumers over the review period.