Transition Glasses Online: Buy

: Available at merchants like Walmart , these combine "smart" technology with lenses that shift from clear to graphite green.

: Modern versions come in various colors beyond the original gray, such as brown, green, and even sapphire. buy transition glasses online

Affordable Transition Lenses - Transitions® XTRActive New Gen : Available at merchants like Walmart , these

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. : Available at merchants like Walmart