Wearers of corrective glasses who are looking for a solution to the hassle of finding sunglasses that work with their glasses or paying for a second pair of glasses need look no further than photochromatic or photochromic lenses.
Photosensitive (photochromatic) lenses that darken in the presence of bright light are handy for people who do not want to carry an extra set of glasses.
When the wearer is exposed to UV, photochromatic molecules (silver halide or silver chloride) that are deeply embedded in the lens begin to change shape.
Photochromatic, or photochromic, lenses, which change color according to light conditions, are also a popular choice for prescription eyeglass wearers.
Photochromatic: Photomochromatic or Photochromic lenses are often used for prescription glasses, but are available in non-prescription as well.