How do Transitions Lenses work?
Transitions Lenses contain special photochromic dyes that cause the lenses to darken when exposed to ultra-violet rays from sunlight. When the ultra-violet light diminishes, the lenses 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% automatic UV protection. Transitions Lenses are also available for all types of prescriptions, from single vision to progressives, and are compatible with all everyday 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 Lenses quickly darken when you go outdoors, and quickly lighten when you return indoors. Most users report that this change happens so smoothly, they are unaware it. They are aware, however, of their continued visual comfort.
Why is UV protection important?
Most of us make a point of taking all the necessary precautions to protect our skin against ultraviolet rays. But, although we are rarely aware of it, our eyes also demand protection against UV damage. We are all exposed to harmful UV rays, and, over the long term, these rays significantly contribute to the deterioration of our eyesight. Most eyecare professionals therefore now recommend that people protect their eyes against UV exposure at all times. Transitions Lenses block 100% of UVA and UVB radiation.