There are some methods for repairing these lenses. First you must know what type of lenses you have before attempting to repair. Methods for plastic and glass are different. If it is plastic lens, use a bit of liquid detergent to wash it under warm, running water. Rub it around lightly and rinse away. Then dry it with a soft, lint-free cloth. And then apply a coating of non-abrasive white toothpaste to fill in the scratches. Rub the coating around the lens for several minutes. Finally wash the glasses in warm, running water again and dry them with soft, lint-free cloth. If it is glass lens, apply a dry cotton swab with white, non-abrasive toothpaste to rub lightly over the scratch for twenty seconds. Then wipe off the toothpaste with a clean, dry microfiber cloth. Dampen the other side of the microfiber cloth and use it to wipe down the glass lens until the scratches are gone.

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