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girl with glasses

Girl With Glasses

Historical types of glasses include the pince-nez, monocle, lorgnette, and scissor or scissors-glasses.
Modern glasses are typically supported by pads on the bridge of the nose and by temple arms (sides) placed over the ears. 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.
An unpopular aspect of glasses is their inconvenience. Even through the creation of light frames such as those made of titanium, very flexible frames, and new lens materials and optical coatings, glasses can still cause problems during rigorous sports. Visibility can be significantly reduced by becoming greasy, trapping vapour when eating hot food, swimming, walking in rain or rapid temperature changes (such as walking into a warm building from cold temperatures outside). Scraping, fracturing, or breakage of the lenses require time-consuming and costly professional repair, though modern plastic lenses are almost indestructible and very scratch-resistant.

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Filename:511178.jpg
Album name:People & Humanity
Rating (1 votes):55555
Keywords:#girl #glasses
Filesize:63 KiB
Date added:Oct 15, 2012
Dimensions:700 x 700 pixels
Displayed:128 times
URL:displayimage.php?pid=511178
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