12th-Century Dark Eyeglasses in China: The Origins of Sunglasses
When we think of sunglasses, images of modern fashion accessories or protective gear often come to mind. However, the origins of sunglasses stretch back centuries. Among the earliest known examples are the 12th-century dark eyeglasses from China, crafted from flat panes of smoky quartz. Unlike corrective lenses, these early sunglasses did not improve vision. Instead,…
