Photochromic light-adaptive lenses for glasses
2021-9-21u2002·u2002Photochromic light-adaptive lenses for glasses and sunglasses. Photochromic lenses are spectacle lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. Other terms sometimes used for photochromic lenses include 'light-adaptive lenses' and 'variable tint lenses.' The most popular brand of photochromic ...
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