History of contact lenses

Said the origin of 1508, the famous painter Leonardo da Vinci (Leonardoda) found that head into his glass tank filled with water from the tank outside of the scene observed, can change the eye's visual function, this period of his sketch ideas oakley polarized radar range sunglasses matte black,
And describes the relevant theory, which most people can be traced back to ancient history of contact lenses. 1845, British astronomer José (John
Herschel) had envisaged a spherical surface of the glass sheet placed on the cornea, the eye in between the glass and into the gelatin, so as to achieve the purpose of a temporary correction of astigmatism eyes. In 1887, the German glass craftsmen Muller (FAMuller) made of blown glass lenses, the eye into the eye to protect the patient sick. In 1888, Germany Fick (AEFick) and France's Alcatel (E. Kalt) test using glass lenses to correct vision, but very uncomfortable, can not put into promotion. With the development of science, the continuous improvement of contact lens materials, from hard to soft, breathable hard from soft breathable lens to lens, contact lenses adequate development in the 20th century. And produced a number of professional contact lens manufactures and distributes the column, contact lenses continue to expand its consumer groups, and optical contrast. In 1937, a transparent plastic (polymethyl methacrylate, PMMA) material instead of glass to make contact lenses more practical. Moran (Mulien) and O'Brien Lai (Obring) in this material the first deputy of hard contact lenses. In 1948, the United States Kevin optometrists. Tuohe (Kevin
Tuohy) pioneered a condition known as Microlens
Small lens, it only covers the corneal diameter, even smaller than the cornea, the thickness of thin, can be more comfortable to wear all day, since one kind of clinical practice and in eyes with refractive errors as a corrective contact lenses is the real birth.
Subsequent rigid lens chip design several improvements discount oakley sunglasses, has been used to soft lenses come out. In 1963, Czechoslovakia polymer chemist Otto Wei Tele (Otto
Wichterle) developed a poly-hydroxyethyl methacrylate (PHEMA) material, while the development of soft contact lenses made of this material. In 1971, Bausch & Lomb (Bausch-Lomb) patented soft lenses free sale of the U.S. FDA licensing, soft lens with its comfortable, easy to adapt to the wearer by the welcome, which quickly replaced the hard lens, the lens occurred a historic replacement. In 1974, in order to improve the lens oxygen permeability, in order to achieve so that the lens can be safe to wear overnight purpose, a breathable rigid lens material (silicone acrylate, SMA) was born, due to the involvement of the silicon lens elements further improve the oxygen permeability and, subsequently, on this basis, derived from a variety of breathable rigid lens material, a representative of a fluorine
Silicone acrylate (fluorosilicone
acrylates, FSA) and fluorine polymers (fluoropolymers) and so on. Composition of organic fluorine materials are so much more good oxygen permeability. In 1998, in order both to avoid the uncomfortable hard lenses, and lenses can be safely worn overnight, CIBA Vision (CIBA
Vision) developed a breathable soft lens materials (fluorinated silicone hydrogel, LotrafilconA),
Meet people desire a 30-day continuous wear and abnormal wear comfortable after the clear, so far the best contact lenses.
In 1981, CIBA Vision (CIBA
Vision) design of the first deputy of soft contact lens astigmatism. In 1982, CIBA Vision contact lenses produced Beauty and the First Deputy First Deputy dual light contact lenses. In 1983, CIBA Vision contact lens care system's first dual oxygen to improve the quality of the lens disinfection. In 1986, Johnson & Johnson (Johnson & Johnson) devaluation wear disposable method discount oakleys, the lens cleaner. In 1987, the company pioneered the use of Bausch & Lomb contact lens care solution (multe-purpose
solution), to promote comprehensive care for contact lenses. In 1998, CIBA Vision's new breakthrough material LOTRAFILCON
A principle of a completely different oxygen, creating the world's highest rate of contact lens oxygen permeability (6 times the normal contact lenses) 175DK / t, do not wash off a day, you can sleep wearing glasses, gives you 24 hours a day to maintain clear vision.