Traditional sunglasses have very wide applications covering even all groups of people. UV protection provided by sunglasses has benefited millions of folks around the world. Taking a simple example, sunshine may make drivers uncomfortable during driving, so that most motorists resort to sunglasses for help. Sunwear with tinted lenses will effectively help filter out excessive sunlight as well as harmful rays included. These conventional sunglasses perform quite well in people with 20/20 eyesight. But for drivers with a refractive vision problem, non-prescription sunglasses are ineffective in providing clear vision. In this case, prescription sunglasses can a convenient and satisfying solution.
Serve as an alternative to combo of Rx contacts plus clip-ons
Some people like to participate in outdoor activities wearing contact lenses. Prescription contact lenses do offer necessary vision aid while eliminating the concern about breakage. But a common complaint is that contact lenses are quite annoying used in an outdoor environment, because they have to battle with sand, sun, wind or water. It is widely known that the microorganism may cause potentially serious eye diseases. Currently, prescription sunglasses are a good option for these kinds of conditions. Wearing sunglasses removes nearly all potential risks of developing eye infection or even disease. In addition, prescription sunglasses can also be a good successor to clip on sunglasses, which traditionally stay over regular prescription eyeglasses.
Single-vision and multifocal types
Prescription sunglasses are right for people who have a vision problem such as presbyopia, myopia, or astigmatism. There are several types of prescription sunglasses available using different lenses. Each of these refractive conditions leads to a type of single-vision prescription sunglasses. Within this category, prescription sunglasses will function as competent as myopia glasses and hyperopia glasses. Differently, presbyopic patients can choose bifocal or progressive lenses to help them read a book or magazine. In this case, prescription sunglasses are similar to multifocal glasses in terms of vision aid. Except for prescription sunglasses that offer various vision correction, there are still some ones providing eye protection. For instance, prescription swimming goggles are a good choice in a swimming pool.
Wraparound lenses limit vision correction
Prescription sunglasses are available in styles as many as non-prescription sunglasses. But there are limited prescription sunglasses in wraparound style that curves around the head. Generally, prescription sunglasses with extreme curves may affect vision, so that some manufacturers provide prescription sunglasses in a limited curves range. Most people know that lens curves are closely associated with lens powers. The consequence is that wraparound sunglass lenses can deal with limited degrees of refractive errors. More specifically, severe myopia and hyperopia can not be addressed by wraparound lenses. In most of the cases, wraparound lenses can only help correct vision errors which are below +/- 5.00. Customers should consult an optician or eye doctor before buying such prescription sunglasses.
Possible lens materials
Prescription sunglasses exert no unusual requirement on lens material. A variety of lenses is available in the sunglasses market, including high-index, polycarbonate, regular plastic, Trivex and even glass materials. Lenses with photochromic tint can change their color automatically according to the intensity of light. But this type of lenses may not change the tint inside a car as the windshield has blocked the UV rays out.
UV protection can equally be guaranteed
Customers who use prescription sunglasses sometimes show concern about whether they can get enough UV protection. UV protection is not directly associated with the color and density of the tint in lenses. As a result, customers can choose any lens which has been verified to have 100 percent UV protection. In addition, prescription sunglasses can also block glare with the use of polarized lenses. Some optical shops may provide discounts on prescription sunglasses.