July 15th, 2009 by ewwink

Glasses also called eyeglasses or spectacles are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays. Eyeglass frames are commonly made from metal or plastic. Lenses were originally made from glass, but many are now made from various types of plastic, including CR-39 and polycarbonate. Not all glasses are designed solely for vision correction but are worn for protection, viewing visual information such as stereoscopy or simply just for aesthetic or fashion values. Safety glasses are a kind of eye protection against flying debris or against visible and near visible light or radiation.

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