Sun Glasses
Sun glasses are an important, and often under-appreciated part of eye care in the harsher outdoor environment. Today sun glasses have far surpassed the level of mere colored lenses used throughout much of modern history and offer a variety of genuine protection against the more harmful rays from the sun. Some interesting historical postulations regarding the origins of sunglasses include a story about its uses by the Chinese. Sunglasses were first created by a method of smoke tinting that darkened the lenses, but offered no other benefits. Also, the lenses had no corrective abilities. Chinese judges in the fifteenth century would don these tinted lenses in an effort to appear free of partiality when examining evidence put before them. Centuries later, fighter pilots made good use of sun glasses as they flew their aircraft in the