Learn about light-responsive lenses that transition with you, indoors to outdoors Warby Parker Why you're seeing this ad unit
The story of transition lenses (technically called ) began in the 1960s at Corning Glass Works, where William H. Armistead and Stanley Donald Stookey discovered that embedding tiny silver halide crystals into glass allowed it to darken when exposed to UV light. Interestingly, this technology is essentially the same science used in old-fashioned photographic film , but with a reversible chemical reaction that allows the lenses to clear up again indoors. buy transition glasses online
For decades, these lenses were made only of heavy glass and were notoriously slow to change, earning them a reputation for being "moody" or unstylish. A major breakthrough occurred in , when Transitions Optical—a joint venture between PPG Industries and Essilor—launched the first lightweight plastic photochromic lenses , making the technology practical for everyday fashion. Where to Buy Transition Glasses Online For decades, these lenses were made only of
: Available at merchants like Walmart , these combine "smart" technology with lenses that shift from clear to graphite green. : They block 100% of UVA and UVB rays automatically
: They block 100% of UVA and UVB rays automatically.