Transitions- Lenses that are clear, or nearly clear indoors and darken automatically in the sunlight (UV exposure). Most transition lenses do not work behind the windshield of a car because windshields actually block UV already. These lenses are perfect for people who spend a lot of time outdoors.
Anti-Reflective Coating- Also known as anti-glare. These lenses improve vision, reduce eye strain and make eyeglasses more attractive. AR coating virtually eliminates reflections from the front, and back surfaces of your lenses.
Trivex- These lenses are thin, lightweight and impact resistant. Trivex lenses improve optical clarity.
Polorized Lenses- These lenses are coated with a special chemical film that helps to reduce glare, glare is caused when light from the sun is reflected off water or a solid surface. By neutralizing glare, polorized lenses help you to see objects more clearly and reduce harmful effects of UV light.