All Light-weight eyeglass lens products have surfaces which are drastically softer plus much more liable to scratches and abrasions than glass lenses. Plastic, polycarbonate, Trivex and high-index plastic lenses all demand a manufacturing facility-applied anti-scratch coating for sufficient lens sturdiness. Nonetheless, Joseph Needham mentioned the mention of glasses in the https://www.polette.com/us/opticals.html
Facts About Eyeglasses Revealed
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