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Polarized Lenses:

The most important elements of your sunglasses are the lenses. Through advanced lens technology, polarized lenses selectively filter horizontally reflected, visually interfering light waves know as 'glare'. The elimination of direct and ambient glare results in superior visual clarity, definition, color transmissions and optical comfort. They accomplish this feat through a process called 'polarization', much like a 'venetian blind' controls sunlight through a window. Polarized lenses have a laminated surface containing vertical stripes. These stripes only allow vertical polarized light to enter your eyes. Glare is eliminated because the horizontal light is unable to pass through the polarized filter. Polarized lenses are used in sunglasses to reduce glare from reflective surfaces such as a body of water, the hood of a car, or any surface the sun can bounce off of. The only way to eliminate glare is to place a polarized lens in its path.