Sun glasses are chiefly worn to protect the eyes from the harmful effects of the ultraviolet rays of the sun. The popularity of these eyepieces started in the 1900s when silent film actors and actresses started wearing them to protect their eyes from the glare of film studio lights. Consumers were attracted to wearing them as a fashion statement when pictures of American military officials, like General Douglas MacArthur, appeared in papers wearing sunglasses. The design of these glasses evolved from simply being a pair of tinted eyewear to having various colors and polarized lenses. They became more popular when Sam Foster mass produced the eyeglasses in the United States in 1929. Foster's glasses were sold under the brand name Foster Grant, which until now, is still one of the most popular brands of eyeglasses. Sun glasses transcended their protective gear reputation and also became a fashion trend after World War II.

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