How do transitions work?
Transitions Lenses contain special photochromic dyes that cause the lens to darken when exposed to ultra-violet rays from sunlight. When the ultra-violet light diminishes, the lens becomes clear again. This photochromic effect comforts the eye and makes Transitions Lenses the right lenses in any light. Are Transitions Lenses an alternative to clear lenses? Yes, because Transitions Lenses are the ideal all-around lenses. While they are clear indoors, they adapt to any light condition when exposed to sunlight outdoors. In addition, they provide 100% UV protection. Transitions Lenses are also available for all types of prescriptions, from single vision to progressives, and are compatible with all frame styles. How fast do Transitions Lenses work? Transitions Lenses begin to darken the moment they are exposed to UV light. The degree of darkening is a function of the intensity of UV light. The instant UV rays are removed, the lenses begin to clear. In short, this means that Transitions Lens
