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Persian doctor who discovered difference between measles and small pox
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Avicenna from Persia wrote, The Book of Healing and The Canon of Medicine.
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First documented hospital in England
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Invented spectacles for treating long sightedness.
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Louis XI established a retreat for the blind that became a hospital for eye disease and is now one of the most important medical centers in Paris.
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Invents the microscope,
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Concave lenses spectacles to treat near- sightedness.
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