Glare or glare is a big problem for the eyes, and people almost go blind when they need their eye the most. This can happen while driving.
Chinese judges use colored smoky quartz lenses to Cheap Sunglasses Outlet hide their facial expressions in court.
History says that smoke dimming was the first object of dark glasses, and the technology was developed in China before 1430. This dark lens is not corrected by eyesight. So why is a dark lens, and why was it developed, and for what purpose?