Occhiali da sole Valentino : Piazza San Marino, vendita occhiali e orologi delle migliori marche

  Sunglasses are fashion tools to protect your eyes from high intensity lights and harmful radiations from the sun, thereby providing a stylish eye protection and good feel of comfort for your eyes. Sunglasses are basically, the by products of commonly known as spectacles or eyeglasses, which are used for correcting your eyesight, which uses powered lenses for improving your visual disabilities. Spectacles are tools to cure some common eye defections, whereas sunglasses are known to prevent them from getting damaged, hence sunglasses are preventive measures on a long term basis. In this modern world, sunglasses are not only used for protecting your eyes, but also to give you a proper fashion look and styling sense.

Older sunglasses used glass lens and metallic frames, but modern sunglasses uses light plastic lens, plastic frames, alloy frames and even wooden frames. Modern lenses comes with thin coating of photographic material, which prevents high intensity lights from reaching your eyes and causing damages to your eyes. Lenses comes in different colour shades like blue, black, brown, green and red to match your fashion and your skin tone. Most lenses are 100% polarized, made out of polaroid plastic films, which prevents glaring and reflection, hence is useful during fishing when you need to see beneath the water surface for fishes.occhiali da sole valentino

The most common of all is the photochromic lens which changes colour when exposed to sunlight. Corrective glasses uses photochromic lens so that it could be used as a corrective tool as well as a sun shade during the day. Modern glasses used UV400 lens which protects your eyes from harmful radioactive radiations from the sun, by blocking those radiations from reaching your retina.

Sunglasses existed since prehistoric ages, the Romans used sunglasses made out of emeralds, the Chinese used crystal sunglasses to correct vision. In the start of 1920, sunglasses were used extensively by actors and actresses, which led to a widespread increase in demands of sunglasses among general public, especially for fashion and giving themselves a boost in lifestyle. People started to discover new designs in the field of lenses and frames, more stylish and protective sunglasses were invented, which became widely used by everyone all across the world.