Polarized lenses are most beneficial because they reduce glare, which causes your eyes to be strained. Polarized lenses also improve visibility because they reduce the glare from objects such as pavement, sand, snow, cars, or bodies of water. Polarized sunglasses work to protect the eyes from UV rays and are useful for most conditions, but are especially helpful for glare reduction while operating heavy machinery. This makes polarized lenses essential for use during boating or driving.
Eye doctors also recommend polarized lenses for patients with sensitive eyes, senior citizens, diabetics, and anyone who spends extended hours in snow or sun. Polarized lenses are also recommended for teens and children under the age of 18. Because lenses in the eyes of children and teens are clear, they allow greater levels of UV light into the eye. This makes them more susceptible to eye damage that has lasting effects, even as serious as blindness.