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How do they make transition lenses?

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Transitions lenses contain special patented photochromic dyes that cause the lens to activate, or darken, when exposed to ultraviolet rays from sunlight. When the UV light diminishes, the lenses fade back. As light conditions change, the level of tint adjusts, offering the right tint at the right time.

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asked Oct 13, 2016 in Local Businesses by smyadmin

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