An anti-scratch or scratch-resistant coating is a **** or coating that can be applied to optical glasses surfaces, such as the faces of a lens or photographic ****. The coating does not interfere with how the glasses lenses function and does not affect vision, but creates a permanent bond with the lens that reduces the appearance of hairline scratches which is common to eyeglass lenses. Though an anti-scratch coating is not 100% scratch-proof, it helps to prevent minor scratches that can easily happen to a regular eyeglass lens. These minor scratches can damage the surface of the eyeglass lens and impair vision. An anti-scratch coating acts as a protective layer thus making the optical lenses more durable.