1. Colored glasses are not equal to sunglasses
Many people think that as long as the glasses have the color to block the sun, they are a pair of qualified lenses. In fact, a pair of qualified sunglasses should be able to block the glare and block the ultraviolet rays. The main role of the color of the lens is to block the glare, so that people do not glare when looking at things, and can not block ultraviolet rays.
2. Deep color does not mean strong UV protection
In general, the darker the lens, the stronger the ability to block glare, but this does not mean that its ability to protect against UV rays is stronger. Whether the lens can protect against UV rays depends mainly on its material and coating.