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  The first pharmacy was established in Baghdad .
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  He discovered difference between measles and smallpox
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  He wrote The Book of Healing and The Canon of Medicine.
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  Found out that wounds should be cleaned to heal.
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  He promulgated a set of laws concerning medical education standards and licensures that were far ahead of his time.
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  Spectacles were invented by Roger Bacon in 1249
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  The Black Death kill 40% of the population in Europe, inspiring doctors to research about medicine.
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  Leonardo Da Vinci dissects corpse in 1489.
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  He collected skeletons and published large plates of anatomical drawings.
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  Vesalius publishes findings on human anatomy in De Fabrica Corporis Humani.
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  The microscope was invented by Zacharius Jannssen in 1590.
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  The use of the scientific method begins.
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  He discovered discovered blood cells.
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  She was the first women to gain a medical degree from Geneva Medical College in New York.
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  Louis Pasteur identifies germs as the cause of diseases.
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  The first vaccine for cholera was founded in 1879.
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  The first contact lenses was discovered in 1887
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  Wilhelm Conrad Rontgen discovered that his cathode ray tube could produce some unusual images.
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  Felix Hoffman develop aspirin in 1899
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  Dr. Paul Dudley White pioneers the use of the Electrocardiograph in 1913
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  He invented the Band-Aid.
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  The first vaccine for the yellow fever was founded in 1935
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  James Watson and Francis Crick worked on the structure of the DNA molecule.
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  He performed the first human heart transplant.