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Warm Photos / funny

Funny Animals with Glasses

Glasses (also called eyeglasses or spectacles) are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays. Modern glasses are typically supported by pads on the bridge of the nose and by temple arms placed over the ears. Historical types include the pince-nez, monocle, lorgnette, and scissors-glasses. Eyeglass lenses are commonly made from plastic, including CR-39 and polycarbonate. These materials reduce the danger of breakage and weigh less than glass lenses. Some plastics also have more advantageous optical properties than glass, such as better transmission of visible light and greater absorption of ultraviolet light. Some plastics have a greater index of refraction than most types of glass; this is useful in the making of corrective lenses shaped to correct various vision abnormalities such as myopia, allowing thinner lenses for a given prescription. Newer plastic lenses, called iZon, can also correct for the symptoms of the higher order aberrations that naturally occur on a persons optical system (including retina, lens, and cornea).[citation needed] These lenses create sharper vision for people who have problems with blurry or dull vision, as well as help reduce the halos, starbursts, and comet-tails often associated with night time driving.

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Funny Animals with Glasses

Scratch-resistant coatings can be applied to most plastic lenses giving them similar scratch resistance to glass. Hydrophobic coatings designed to ease cleaning are also available, as are anti-reflective coatings intended to reduce glare, improve night vision and make the wearer’s eyes more visible. CR-39 lenses are the most common plastic lenses due to their low weight, high scratch resistance, low dispersion, and low transparency to ultraviolet and infrared radiation. Polycarbonate and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection, though polycarbonate offers poor optics due to high dispersion, having a low Abbe number of 31. Not all glasses are designed solely for vision correction but are worn for protection, viewing visual information (such as stereoscopy) or simply just for aesthetic or fashion values. Safety glasses are a kind of eye protection against flying debris or against visible and near visible light or radiation. Sunglasses allow better vision in bright daylight, and may protect against damage from high levels of ultraviolet light.
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