Photochromic (Transition) Lenses

Also known as “transition lenses,” photochromic lenses darken when they come into contact with UV rays. This eliminates the need for sunglasses, increasing convenience and minimising expense for the wearer. They’re technically not a prescription type, but rather a treatment added to prescription lenses. You can have photochromic bifocals, single vision lenses, and so on. Note that the lenses will darken even on cloudy days, which some may find inconvenient. However, they’re often a popular choice as they add a little style to your glasses.