Trivex Polarized 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.
How Do Polarized Lenses Work?
Light travels in waves, and the waves of normal light travel in several different directions. Combined, they create the visible light we see, whether it comes from the sun, a lamp, or a candle. But when light is reflected off of a flat surface or a body of water, it travels in only a single direction. This gives the reflected light an uncomfortable intensity that we call glare.
Normal sunglasses work by limiting the amount of light coming from all directions, dimming it so that you find it easier to look around without squinting. Polarized lenses go a step further, taking advantage of the fact that most reflected light travels in only one direction. Using a special chemical process that creates a special coating on the surface of the lens, these glasses filter out all light coming from that direction, virtually eliminating glare.
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