What are photochromic glasses?
Photochromic glasses use light-adaptive lenses that become darker when exposed to ultraviolet light outdoors and return clearer indoors. They are available with different frame styles and prescription lens options.
Frequently Asked Questions
How do photochromic lenses work?
Photochromic lenses contain light-responsive compounds that react to ultraviolet light. The lenses generally darken outdoors and become clearer when ultraviolet exposure decreases. The transition speed and darkness can vary with temperature, ultraviolet exposure, lens material and lens technology.
Do photochromic glasses work in the car?
Many standard photochromic lenses do not become as dark behind a car windshield because windshields filter much of the ultraviolet light that activates them. Performance varies by lens technology, so check the product details if driving is a priority.
Do photochromic lenses block blue light?
Blue-light filtering is not a feature of every photochromic lens. Some lens products may include a separate blue-light filtering treatment or material, while others may not. Check the specifications for the exact lens option you select.
