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  Wrote 30 books on medicine, the "Pandects"
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  Discovers difference between smallpox and measles.
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  The first eye surgery was performed, using a needle and he was removing a cataract.
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  Roger Bacon invents glasses
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  Leonardo da Vinci dissected corpses
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  Vesalius publishes findings on human anatomy in De Fabrica Corporis Humani.
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  Zacharius Jannssen, dutch lens grinder is to make the first microscope
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  Use of scientific method begins
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  Published "An Anatomical Study of the Motion of the Heart and of the Blood in Animals" Describing how blood is pumped through the body with the heart
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  First successful surgery with anesthesia
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  Stops outbreak of cholera
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  René Laënnec invents the stethoscope
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  Insulin first used to treat diabetes.
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  First vaccine for tuberculosis, and first vaccine for tetanus.
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  First HMO insurance
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  Discovers Pencicillin
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  Polio Vaccine
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  HIV, the virus that causes AIDS, is identified