Trivex Transition RX ( gray / brown )
Trivex lenses are a relatively new development in the lens world. Trivex lenses have a 1.53 index which makes them a bit thinner than regular plastic lenses, and a bit thicker than polycarbonate lenses. The Trivex lens material is lighter than polycarbonate, and also has better visual acuity than polycarbonate, and is also recommended as a safety material similar to polycarbonate.
What is Transitions(photochromic) Lenses?
Photochromic lenses are eyeglass 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." Transitions Lenses (Transitions Optical) are the most popular brand of photochromic lenses sold in the United States.
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