Scratch-resistant and anti-reflective lens coatings are often a package deal when new glasses are purchased. Today, most eyeglass lenses, including high-index lenses, are made from polycarbonate materials that include built-in scratch-resistant coating. Although no coating that states "scratch-resistant" can completely protect your lenses from scratches and normal wear and tear, the coating will do its part to protect them. Use a microfiber cloth to clean the lenses and keep them in a cushioned case at all times.
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Compare a pair of glasses that you suspect have scratch-resistant lenses to a pair of glasses that you know for a fact do not have them. Lenses that are scratch-resistant have a much harder surface than lenses that are not scratch-resistant. You should be able to tell by a visual inspection of the surface and the feel of the lenses.
Give the lenses a glare inspection. Even though not all lenses that are scratch-resistant are glare-resistant, many are. If you do not see a glare in them that could be a sign that they are scratch-resistant.
Look for scratches on the lenses. Pay attention to tiny scratches that look like hairs stuck to the lenses. Wash the lenses with warm water and a mild detergent. Rinse. Are the tiny scratches still there? If there are no scratches whatsoever on the lenses, it is a high probability that the lenses are scratch-resistant.
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