Eyeglass Repair USA

Sunglasses are one of the most commonly used accessories. It is recommended to wear sunglasses that block ultraviolet (UV) radiation to protect the eyes from serious damage and even skin and eye cancer. Sunglass lenses are made of plastic, glass, or SR-91. Plastic lenses are generally made from polycarbonate, acrylic, or polyurethane. Glass lenses provide the best optical clarity and are scratch resistant. They can also break, crack or shatter by force. Plastic lenses are lighter than glass ones and mostly shatter-resistant but are more prone to scratching. Polycarbonate plastic lenses are the lightest, and are also almost shatterproof, making them good for protection from impact. The frames of a pair of sunglasses are usually made of nylon, plastic, or metal. Plastic frames are light and more durable in addition to being more affordable than other alternatives.  Nylon frames are more flexible and lightweight. They are easily able to bend slightly and return to their original