Eyeglasses sunglasses are allowed to be made with different frame and lens materials. The frame is supposed to hold the lenses stably and thus needs to be made with high quality. Meanwhile, eyeglass lenses involve a larger area and they are also important in terms of eye protection. In outdoor activities or sports involving risky factors, the lenses are even the key part that offers adequate protection. As a result, it is very important to choose an appropriate lens material, since eye protection is also critical in daily life. With the continuous development of lens technology, optional lens materials contain mainly regular plastics, glass and new forms of plastics. Glass is very rarely used in recent years because of its unpleasant weight. Regular plastics are still acceptable but are losing popularity due to their lack of superior optical features. Polycarbonate eyeglasses and glasses made of high index lenses are the most popular.
New forms of plastics including polycarbonate and high index materials have some advantages over traditional lens materials and this explains their dominant role in the current market. In particular, people with a strong prescription are perfect users of high index lenses because this material will never bring an excessive lens thickness. Well, our focus is polycarbonate eyeglasses because they have even more benefits. In general, polycarbonate lenses are thinner and lighter than lenses made of regular plastics. Used in sunglasses, polycarbonate lenses are perfect because they offer 100% UV protection by the lens material itself. This is not the end. Lenses made of polycarbonate are up to 10 times more impact-resistant than plastic or glass lenses.
Natural UV protection, lightness, thinness and extreme impact resistance make polycarbonate lenses an unparalleled option. It is nearly impossible to find another lens material with so many advantages. And these benefits lead to the prevailing role maintained by polycarbonate eyeglasses, especially among children and people who like outdoor sports. Children usually spend much time outdoors and need proper UV protection. Of course, lightweight polycarbonate lenses also help reducing the weight over children’s faces. For the second group, it is the valuable impact resistance that matters. Some sports involve flying objects or dangerous particles, making the use of impact resistant lenses a necessity.