As wonderful as sunglasses are, all sunglasses are not of the same quality and it is important to take care when shopping for a pair. The most important consideration when purchasing sunglasses is to find a pair that provides full protection from ultra violet (both UVA and UVB) rays, which are generated from the sun even on cloudy days. While experts disagree about possible negative effects UVA rays may have on the eye, it is known that UVB rays can cause a number of eye conditions including permanent retinal damage, so make sure your sunglasses are rated for full UV protection. Sunglasses come in a variety of styles and types. If fashion is your main consideration, pick a stylish frame and then have custom lenses with UV protection added to them.

Photochromic lenses change color depending on the amount of UV light to which they are exposed, although for the most part, they appear darkly shaded when outside, and light or clear when inside. Photochromic lenses create the illusion of sunglasses and regular glasses in one package. Amber-colored lenses tend to block blue light. There is discussion about whether blue light is harmful to the eye, but outdoors lovers agree blue-blocking lenses are super on the ski slopes or while hunting or fishing.