According to different preferences and different uses of prescription sunglasses, vastly wide designs are applied in manufacturing. But the most fundamental thing is to protect wearers’ eyes from diverse damages in the basic principles. Reduce the stimulus glare, see clearly without distortion, coated with anti-ultraviolet, no distortion of color recognition, accurate and identify traffic signals, all these functions should be the basic functions of sunglasses.
If these functions are flawed, at worst not achieve the role of prescription sunglasses, or it will lead to dizziness, headaches, and sometimes result in slowing your reaction and even lead to traffic accidents and so on. So the selection can not just focus on the style of sunglasses, but pay more attention to their inherent quality. High-quality polarized lenses can protect people’s eyes from reflected light injuries, in addition, can enhance the visual contrast with outdoors, especially when driving, polarized lenses can be reduced glare of mixed bright lights.
Sunglasses are the best seller during summer. Fashion, beauty, radiation protection, these features drive people to purchase a pair of sunglasses. But the experts pointed out that when you are choosing your sunglasses, you should take extra care not only focus on style, while ignoring their own quality of sunglasses. The following four kinds of prescription sunglasses are particular unsuitable for your eyes.
1, Anti-ultraviolet function are worthy of your investment in sunglasses. Good polarized sunglasses can block more than 99% of the ultraviolet rays. Functional difference between different sunglasses, good sunglasses enable you to see things as if staying in the darkroom when you are expose to bright lights, at this time your pupils would become large. And the residual will be a substantial injection of ultraviolet light but it may hurt the eyes.
2, If the rate of an inscrutability of sunglasses are too high, put on these sunglasses easily causing traffic accidents.
3, If there is no mark logo of category on the packages, you’d better not to buy. Sunglasses are generally divided into three categories, namely for the shading of the sun, for decoration and for anti-plane radiation waterproof snow blindness or other special sunglasses.
4, At last, you should not choose the prescription sunglasses that of the performance does not meet the requirements. By the external shock in the lens can be easily broken into fragments and may drop into people’s eyes which may result in a fatal injury.