There are exactly prescription sunglasses which are used by many people who need vision aids. Before we talk the advantages of prescription sunglasses, you can image these situations which often happen in your daily life making your life less convenient. For example, you may not want to wear your contact lenses on the beach where your eyes can become itchy and watery as you battle the effects of sand, sun, wind and water. Even the non-prescription sunglasses you wear over your contact lenses may not provide enough protection. At these moments, prescription sunglasses are designed to solve these problems. So, people can see things clearly by wearing prescription sunglasses for they have prescription lenses that offer vision aids.