All about Glasses and Eyewear

Eyeglasses were first used in Europe in Italy, and some portraits from the Middle Ages depict persons wearing eyeglasses. With the invention of the printing press in the 15th century, the demand for glasses increase and in 1629 was large enough for a charter to be granted to a guild of spectacle makers in England. The first bifocal glasses were made Benjamin Franklin on his proposal for the 1760th In early times the only glasses that spherical lenses were manufactured to correct nearsightedness and farsightedness. Only in the late 19th century, cylindrical lens for correcting astigmatism come into common usage.

Glasses are lenses or prisms worn in front of the eyes to compensate for various defects of vision. The most common form of eyeglasses consists of a pair of plastic lenses in a metal or plastic frame mounted on the nose. The frame held in place by spring pressure on the nose or temples, or arms, grabbed her head or hook around the ears. Eyewear with lenses made of hard plastic is commonly used for the sake of increased security and low weight.

Other types of glasses include those held in place by pressure on the nose, usually called pince-nez (French, "pinch nose"). Singles lenses used to correct the sight of one eye, held in place by wedging into orbit of the eye, known as Monocle. Glasses with a handle instead of temples, occasionally used for reading, called his glasses.

The lenses of the glasses are ground in the form of concave spherical lenses for nearsightedness (myopia), convex spherical lenses for hyperopic (farsightedness), cylindrical lenses for astigmatism, and prisms of error convergence. Often it is necessary to grind lenses in a combination of these forms to correct several anomalies at a time. Bifocal lenses are used to give a different amount of correction for vision at distance and close work. The upper portion of these lenses is due to distant vision and the lower part for near vision, so that the user has simply to lower your eyes to read and educate them to look at distant objects. Trifocal lenses are Bifocal which is ground with a center lens for intermediate distance.

Glasses are worn to protect the eyes and to correct mistakes. The colored glasses or sunglasses, worn to protect your eyes from the sun's rays are a familiar example. To protect their eyes from actinic rays welding flames workers spectacles of a deeper hue. Seamstresses and factory workers glasses or goggles great strength to protect their eyes from flying particles of metal, and pilots and racing drivers wear goggles to protect their eyes from the wind. Waterproof goggles allow divers to see underwater. Ski goggles help skiers with their vision as well.

Today, eyewear do more than just correct your vision. They have also become fashion statements. For example, celebrities like Elton John and Lisa Loeb known for their ever-present spectacles. Ms. Jacky O. is also known for his signature big sunglasses, many stars are now increasingly mimics, like Nicole Ritchie or Paris Hilton.

Eyewear Design by Frances is an eye clinic that caters to both function and fashion with their selection of eyewear, goggles and sunglasses collection. They carry designer frames and brands like BCBG, Caviar, Canal, Juicy Couture, Police, Costa del Mar, Jaguar, Jane Barnes, Lulu Guinness, Lactose, babe, Vera Wang, Menisci, Daniel Swarovski, Jimmy Coho, Marc Jacobs, Nicole Miller , Carr era, Goldfinch, TMX, Alex Nicole, Diva and many more.