Photochromic lenses are lenses that change their color depending on the current light situation. They will be clear indoors, ...

Continue reading Transition glasses, also called photochromic lenses ... as long as they have a uniform tint across the entire lens. The color of the lens does not affect how effective it is ...

A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...