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2. Photochromic lens - Wikipedia

   en.wikipedia.org/wiki/Photochromic_lens

   A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.

3. Photochromism - Wikipedia

   en.wikipedia.org/wiki/Photochromism

   Sometimes, and particularly in the dye industry, the term irreversible photochromic is used to describe materials that undergo a permanent color change upon exposure to ultraviolet or visible light radiation. Because by definition photochromics are reversible, there is technically no such thing as an "irreversible photochromic"—this is loose ...

4. At 57, Brooke Shields Loves These Stylish Reading Glasses—and ...

   www.aol.com/57-brooke-shields-loves-stylish...

   Brooke Shields wore Caddis Bixby Reading Glasses and a gold face mask while promoting ‘Pretty Baby,’ in an IG post. Shoppers love the progressive lenses. At 57, Brooke Shields Loves These ...

5. Glasses - Wikipedia

   en.wikipedia.org/wiki/Glasses

   Man with glasses. A woman with glasses. Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.

6. EnChroma - Wikipedia

   en.wikipedia.org/wiki/EnChroma

   The company received a grant from the NIH in 2005, the glasses were released to the public in 2012 and cheaper versions in 2014. [4] In 2015, EnChroma teamed up with Valspar Paint in an advertising campaign titled "Color For All", which focused on the experience of trying on EnChroma glasses for the first time. This led new EnChroma owners to ...

7. Essilor - Wikipedia

   en.wikipedia.org/wiki/Essilor

   After many years as rivals, Essel and Silor merged on 1 January 1972 to form Essilor, then the world's third-largest ophthalmic optical firm. [1] Its first year of existence was marked by the creation of Valoptec, a non-trading company composed of stockholder managers who held half the company's capital stock, and the purchase of Benoist-Bethiot, a French lens manufacturer specializing in ...