You may think the only thing you need to worry about when buying sunglasses is the style of frame or the color of tinting. But actually, there are other important characteristics of effective sunglasses that need to be considered.
Ultraviolet radiation can harm all parts of the eye, including the eyelid skin, conjunctiva, sclera, and cornea. That means that the whites of your eyes need protection, too. Here are some things you’ll need to keep in mind when you look for sunglasses.
Ultraviolet, or UV, radiation is that portion of the light spectrum that is beyond the shortest wavelength of visible light (which is violet). It can damage the human eye, which is why sunglasses are important. There are three types of UV light: UVA, UVB, and UVC.