Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight.We provide photochromic lenses for 1.56 lenses for both single-vision and readers. We support gray, tea, pink, purple, blue, orange, yellow, brown, green photochromic lenses, which you can find when you select “Photochromic” and then click “Customization”.