Transitions lenses are photochromic lenses that are clear until dangerous ultraviolet radiation (UV) is present. Once outdoors, the brighter the sun, the darker transitions lenses become. They turn as dark as sunglasses by automatically reacting to the intensity of UV radiation. Since transitions lenses block 100% of the sun's eye-damaging rays and help to reduce painful, discomforting glare, they protect your eyes on cloudy days, sunny days, and everything in between.
Innovative photochromic technology offers lens performance in nearly every lens design and material available today; including shatter-resistant lenses, bifocals, trifocals, progressive, and standard and high index materials. In addition, it provides the benefits of 100% UVA and UVB protection, and glare reduction.