Sunglasses are a very good accessory for your otherwise already perfect outfit. However, besides adding style to your look, they also serve other functions. For one, they protect your eyes to harmful ultraviolet (UV) radiation. Exposing your eyes to harmful UV rays from sunlight has been known to cause the development of cataracts and the degeneration of a person's vision. Good quality sunglasses block all UV rays and protect your eyes from harm. Sunglasses also protect the skin around the eyes, which prevents premature aging and wrinkles.

Sunglasses also protect your eyes from other dangers. One of these dangers is glare. All surfaces reflect light, and some surfaces can cause an extremely bright glare. These reflections can be very distracting, even dangerous in some circumstances. Sunglasses reduce the glare and give you a more comfortable vision. Polarized sunglasses are particularly effective in reducing reflective glare.

Sunglasses can also reduce the headaches and eyestrain. In the eye, the pupil controls the amount of light that enters the retina. When there is little light, the pupil dilates to let light in. In bright light, the pupil constricts to protect the retina from too much light. There are times when it is extremely bright, but the pupil is not able to constrict enough to keep out the excess light. In this case, the person will resort to squinting. However, squinting strains the muscle surrounding the eyes, which causes fatigue. Pupil constriction and squinting can lead to headaches and eye strain. Sunglasses reduce the amount of light that can reach the eyes. As a result, the need to squint is eliminated. This will reduce the risk of headaches and eye strain caused by the sun.

Your eyes are a very important part of your body. You must do what you can to protect them from the harmful elements. Sunglasses are designed for your eyes' protection. Looking good is only part of their appeal.