Stylish sunglasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. These stylish sunglasses can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. One of the most widely iconic styles of summer is a stylish pair of sunglasses, but they are not all created equal. Too block out all of the sun’s harmful UVA and UVB rays, the best sunglasses will have a UV 400 rating or state 100%UVA/UVB protection. This means they will provide full ocular safety against the detrimental effects of UV radiation.

Stylish sunglasses can also be processed as prescription sunglasses which can meet the demand of people who have eye problems but are keen to explore the outdoors during bright sunny days. Though a number of wraparound sunglasses are not compatible with prescription lenses and their severely curved wraps sometimes cause vision distortion.

In terms of colors, stylish sunglasses with brown shades are much more preferable than other colors. Brown is considered the best color for sunglasses since it provides the wearer with the widest light spectrum and is also known to block blue light effectively and offer optimum contrast. Gray, on the other hand, is best for bright environment, particularly if the wearer is going to the beach where the brightness of the sun's rays is magnified by the water. Some stylish sunglasses are designed as photochromic eyepieces. Photochromic glasses have the ability to darken in sunny conditions and revert to a lighter shade when the wearer moves indoors. Some experts have warned, though, that photochromic lenses are not as effective in blocking UV rays as some sunglasses that are particularly designed for this purpose. In general, it is much better to ask an eye expert for advice or have the lenses assessed in terms of the amount of UV light that can pass through them.