Milestones:
1300cChinese judges wore smoke-colored quartz lenses to conceal their eye expressions in court.
1430cVision-correcting darkened eyeglasses were introduced into China from Italy
1700cJames Ayscough believed blue-green-tinted glass could correct specific vision impairments.
1929 Sam Foster found a ready market for sunglasses on the beaches of Atlantic City, New Jersey
1936 Sunglasses become polarized, Ray Ban began using Edwin H. Land Polaroid filter.
1960 A clever advertising campaign by Foster Grant makes sunglasses chic and popular.
2004 Oakley, eyeware company, developed Thump, sunglasses with built-in digital audio player.
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