Personal contact lenses
origin of contact lens by Adolf Fick started in 1887 Adolf Fick has successfully produced contact lenses for the first time. It was made of brown glass. He was knowledgeable about the eyes of Claudia Rivero from Leonardo da Vinci from the Codex of the eye, Manual D printed in 1508 the knowledge of glass, liquid can seep into and attached to the accompaniment of Catalonia. René Descartes had a clear glass, but this idea was not successful experiments Thomas Young was similar in 1801, later Sir John Herschel had proposed the idea came about two types of contact lens shape. It should look like a circle The second idea is that it should look like a gel. Transparency is moderate The concept of these two causes in 1929 Hungarian Dr. Dallos can find the best way to produce contact lenses. He was the first to produce lenses for the eye to the year 1930 have been polymethyl methacrylate (PMMA or Perspex / Plexiglas) used to produce contact lenses. And later developed by William Feinbloom has produced contact lenses. With the use of plastic mixed with glass and cons of polymethyl methacrylate is oxygen can not pass. This lens is a hard lens. The soft lenses made by Otto Wichterle, which is formed from a gel in 1959 and in 1999 have led silicone hydrogels produced contact lenses. Because oxygen can get through this lens and used to this day.
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