Replica Oakley sun glasses:


Oakley sung glasses have a long history. It was in the mid-18th century when James Ayscough began experimenting with tinted lenses in spectacles. He believed that blue- or green-tinted glass could correct specific vision impairments. Incidentally, protection from sun's rays was not a concern of his. Sunglasses as such were introduced by Sam Foster in 1929 when he found a ready market on the beaches of Atlantic City, New Jersey, where he began selling Foster Grants from a Woolworth on the Boardwalk. Oakley sung glasses however, are special. It is now well known that UV exposure predisposes people to premature cataract, age related macular degeneration, pterygium and UV keratitis. These health-risks instigated the patenting of the Polaroid filter by Edwin H. Land in 1936.

Sunglasses

Sunglasses are a visual aid, variously termed spectacles or glasses, which feature lenses that are colored or darkened to screen out strong light from the eyes. Many people find direct sunlight too bright to be comfortable, especially when reading from paper on which the sun directly shines. In outdoor activities like skiing and flying, the eye can receive more light than usual. It has been recommended to wear these kinds of glasses on sunny days to protect the eyes from ultraviolet radiation, which can lead to the development of a cataract. Sunglasses have also been associated with celebrities and film actors primarily due to the desire to mask identity, but in part due to the lighting involved in production being typically stronger than natural light and uncomfortable to the naked eye.

A fashion statement

The color of the lens can vary with fashion, but for general use, green, grey, or brown is recommended to avoid or minimize color distortion, that could be dangerous when, for instance, driving a car. Grey lenses are considered neutral because they do not enhance contrast or distort colors. Brown and green lenses cause some minimal color distortion, but have contrast-enhancing properties. Red lenses are good for medium and lower light conditions because they are good at enhancing contrast. Orange and yellow lenses have the best contrast enhancement and depth perception. That is why yellow lenses are commonly used by golfers and shooters. Blue and purple lenses offer no real benefits. Clear lenses are used mainly to protect the eyes from impact, debris, or chemicals. Other models have polarized lenses to reduce glare caused by light reflected from polarizing surfaces such as water as well as by polarized diffuse sky radiation (skylight). Some models use a degradation where the top of the glass (through which the sky is looked at) is darker and the bottom is transparent.

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