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It is a very thin glass, which is placed on the surface of our eyes. http://www.eyecontactlenses.org/ We can consider it as a medical device. Due to its usefulness, people from different levels use it globally. But naturally female like to wear eye contact lenses more. Many scholars like Leonardo da Vinci, Rene Descartes, Thomas Young, Sir John Herschel talked about the contact lens in different times but Adolf Fick was the first to successfully fit contact lenses in 1888.
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