|
Sunglasses
Sunglasses are a visual aid, variously termed spectacles or glasses, which feature lenses that are coloured or darkened to screen out strong light from the eyes. more...
Home
Boys
Girls
Infants & Toddlers
Men's Accessories
Backpacks, Bags
Belt Buckles
Belts
Briefcases
Gloves, Mittens
Hats
Keychains
Neckwear, Ties
Organizers, Planners
Other Items
Sunglasses
Armani
Arnette
Black Flys
Bolle
Carrera
Cartier
Choppers
Christian Dior
Costa Del Mar
Diesel
Dolce & Gabbana
Dragon
Gucci
Harley Davidson
Hugo Boss
Maui Jim
Nike
Oakley
Jackets
M Frame
Other
Wires
X Metal
Other
Prada
Ray-Ban
Revo
Serengeti
Smith Sport
Spy
Versace
Vuarnet
Wiley X
X Loop
Suspenders, Braces
Wallets, Holders
Men's Clothing
Uniforms
Vintage
Wedding Apparel
Women's Accessories,...
Women's Clothing
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 kind of glasses whenever outside 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.
Since the 1950s sunglasses have been popular as a fashion statement, especially on the beach.
Uses
Hiding one's eyes has implications in face-to-face communication: It can hide weeping, being one of the signs of mourning, makes eye contact impossible which can be intimidating, as in the stereotype of the guardian of a chain gang, or can show detachment, which is considered cool in some circles. Darkened sunglasses of particular shapes may be in vogue as a fashion accessory. Note that normal glasses are very rarely worn without a practical purpose — curiously, they can project an image of uncool nerdiness that sunglasses do not have. The impact on nonverbal communication and the cool image are among the reasons for wearing sunglasses by night or indoors. People may also wear sunglasses to hide dilated or contracted pupils or bloodshot eyes (which would reveal drug use, or recent physical abuse (e.g. punching in face, particularly in ladies), or to compensate for increased photosensitivity.
People with severe visual impairment, such as the blind, often wear sunglasses in order to avoid making others uncomfortable — not seeing eyes may be better than seeing eyes which seem to look in the wrong direction. Those whose eyes have an abnormal appearance (for example due to cataract) or which jerk uncontrollably (nystagmus) may also do so.
Visual clarity and comfort
Sunglasses can improve visual comfort and visual clarity by protecting the eye from glare. Various types of disposable sunglasses are dispensed to patients after receiving mydriatic eye drops during eye examinations.
Protection
Excessive exposure to ultraviolet radiation (UV) can cause short-term and long-term ocular problems such as photokeratitis, snow blindness, cataracts, pterygium, and various eye cancers. Medical experts often advise the public on the importance of wearing sunglasses to protect the eyes from UV. In the European Union, a CE mark identifies glasses fulfilling quality regulations. In the preparation for solar eclipses, health authorities often warn against looking at the sun through only sunglasses.
Read more at Wikipedia.org
|
|