The type of vision problem that you have determines the shape and type of the eyeglass lens that is best suited for you. For example, a lens that is concave, or curves inward, is used to correct nearsightedness, while a lens that is convex, or curves outward, is used to correct farsightedness. A distortion in the shape of the cornea, or astigmatism, is usually corrected by a cylinder shaped lens. Simply put, the eyeglass lens is a tool used by the experts at our San Antonio optical goods store, The Eyeglass Shop, to focus light properly onto your retina.
The single vision lens is prescribed if you need correction for one field of vision, whether for distance or objects up close. Our San Antonio optical goods include a number of choices for the single vision lens wearer, including our high index lenses and polycarbonate lenses. Aspherics are ideal for strong prescriptions, because they are flatter and thinner and provide better vision than ordinary lens. As technology progresses so do choices in eyeglass lenses.
In the past, eyeglass lenses were made solely of glass but today most eyeglasses are made of high-tech plastics. These new lenses are much lighter, do not break as easily, and can be treated with a filter to protect your eyes from damaging ultraviolet light. One modern eyeglass lens recommended by the experts at our San Antonio optical goods store, lighter, thinner, and more scratch-resistant than glass lenses, are polycarbonate lenses. These eyeglass lenses are shock-resistant and a good choice for people who participate in sports regularly, work in a job environment where their eyeglasses can be easily scratched or broken, and for children who tend to drop and scratch their eyeglasses. Polycarbonate lenses also provide ultraviolet protection.
Trivex lenses are made from a newer plastic with similar characteristics of polycarbonate lenses. Lightweight, thin, and impact-resistant, they may result in better vision correction than the polycarbonate lenses for some people. High index plastic lenses are designed for people who require strong prescriptions but these eyeglass lenses are lighter and thinner than the standard, thick “coke bottle” lenses that may otherwise be needed. Whatever your situation, our educated staff at The Eyeglass Shop will educate you on the best choice for your particular situation.