Unlike traditional lenses, HD lenses are manufactured using digital computer technology and diamond-cutting tools that allow the lenses’ surface to be customized to an individual’s eyes. High-definition lenses can deliver this unprecedented level of customized vision correction because the lenses are engineered based on a digital scan of the eyes. The resulting, customized vision correction improves unique vision problem areas and providers wearers with superior clarity, and sharper, brighter eyesight, whether they are nearsighted, farsighted, or have a mild astigmatism. The lenses are also thin and light, making them ideal for long wear, even with the strongest prescriptions. HD lenses are most common in progressive lenses, but they can also be made for single vision glasses.