How to Choose Sunglasses According to Lenses

Generally speaking, most of people want to get a fashionable look in sunglasses. So, when it refers to choosing sunglasses, most of them will care about the color, the design, the frame shape of sunglasses so as to choose the best suitable sunglasses to flatter their face and match their clothes. However, seldom people choose sunglasses mainly depending on their lens type.

sunglasses

Today, there are several kinds of materials which apply to sunglasses. And different material-made lenses have different characteristics and functions. So far, there are three kinds of materiasl which are commonly applied to sunglasses lenses. They are glass, polycarbonate and CR-39. In detail, glass is the most commonly used material for lenses and have a long history applied in glasses and sunglasses. Compared with other modern material, glass is heavier. As for polycarbonate, they are lighter and more impact resistant. Most of sports sunglasses today are made of polycarbonate. And CR-39 is also a kind of plastic material which is available for lenses. This material is light weight but is easy to be scratched. So, if you buy sunglasses with CR-39 based lenses, you shall choose anti-scratch coating.



Apart from dividing lenses by different lens material, sunglasses can also be classified by their lenses type. For example, there are polarized lenses and photochromic lenses etc. In detail, polarized sunglasses are considered the most protective sunglasses. Compared with other sunglasses, polarized sunglasses not only prevent UV, but also filter glare. So, polarized sunglasses are the first choice for drivers, fisherman and people whoever like water related sports. As for photochromic sunglasses, the most benefit is that they can turn dark or clear according to the UV rays in the sun. They will turn dark when you stay in sunshine so as to protect your eyes and turn transparent lenses when you stay indoors. So, those sunglasses suit people who often go out and in.



Therefore, when you choose sunglasses the next time, please don’t forget to think about what kind of lenses you need.