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The reading stone was used to help read with people who need reading glasses
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Tomasso da Modena showed a representation of eye glasses in his artwork. His paintings showed people wear magnifying glasses on their nose.
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Spanish craftsman invented the first eyeglass frame temple. They put strings or silk through the frame and looped them over their ear's.
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In the 17th Century people started understanding the principle of these lenses due to Johannes Kepler, who published the first correct explanation. Glasses then started to help correct problems with sight distances.
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Optician Edward Scarlett invented the rigid temple eye glasses, which sat upon the user's ears which helped the glasses stay on their face.
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Cylindrical Lenses were invented by Sir George Airy. These lenses were used to correct astigmatism.
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An optician in London named John Isaac Hawkins invented and patented the terms bifocals and trifocals. But others believe that Benjamin Franklin did invent them. Bifocal helps correct nearsightedness and trifocals help correct near,medium, and distant vision impairments.
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F. E. Muller of Germany in 1887 created the first tolerable and able to see through contact lense