1.60 High Index Single Vision Photochromic Lens HMC

1.60 photochromic lenses offer a combination of two key benefits. First, the '1.60 index' means they have a higher refractive index, making them significantly thinner and lighter than regular plastic lenses, which is great for comfort and aesthetics, especially with stronger prescriptions. Second, they are embedded with 'photochromic' technology. The lenses contain molecules that automatically darken when exposed to ultraviolet (UV) rays from the sun, providing clear vision indoors and instant sunglass-level protection outdoors. They transition back to clear when UV light is removed.