How to Fix Scratched Sunglass Lenses!

Fix scratched sunglass lenses

The history of sunglasses is much longer and varied than most people think. Did you know that in the 12th century or possibly earlier, China first used sunglasses? Their “lenses” were flat panes of smokey quartz that offered no corrective powers, but did protect eyes from the sun’s glare, and, according to some sources, evil spirits. There are contemporary documents that describe judges using such glasses in courts to conceal their facial expressions whilst questioning witnesses. Then, in the 1930s, the Army Air Corps commissioned Bausch and Lomb, an optical firm, to produce highly effective spectacles that would protect the pilots from high-altitude glare problems. Bausch and Lomb physicists and opticians then perfected a special dark-green tint that could absorb light in the yellow band of the Continue reading