Glasses for Men Collection
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.[citation needed] Polycarbonate and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection.
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Modern Eye Glasses Frames
Though modern frames can be both lightweight and flexible, and new lens materials and optical coatings are resistant to breakage and scratching, glasses can pose problems during rigorous sports. Scraping, fracturing, or breakage of the lenses can require repair by a Licensed Optician professional.
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Invention of Glasses
The first eyeglasses were made in Italy at about 1286, according to a sermon delivered on February 23, 1306, by the Dominican friar Giordano da Pisa (ca. 1255–1311): "It is not yet twenty years since there was found the art of making eyeglasses, which make for good vision … And it is so short a time that this new art, never before extant, was discovered … I saw the one who first discovered and practiced it, and I talked to him.
source : wikipedia
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.[citation needed] Polycarbonate and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection.
.png)
Though modern frames can be both lightweight and flexible, and new lens materials and optical coatings are resistant to breakage and scratching, glasses can pose problems during rigorous sports. Scraping, fracturing, or breakage of the lenses can require repair by a Licensed Optician professional.
.png)
The first eyeglasses were made in Italy at about 1286, according to a sermon delivered on February 23, 1306, by the Dominican friar Giordano da Pisa (ca. 1255–1311): "It is not yet twenty years since there was found the art of making eyeglasses, which make for good vision … And it is so short a time that this new art, never before extant, was discovered … I saw the one who first discovered and practiced it, and I talked to him.
source : wikipedia
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