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  Concept of the Hospital: They started to introduce the concept of a hospital in the Roman Empire. It was a place where patients could be treated by doctors with access to specialized equipment.
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  First Pharmacy: They compounded medications as prescribed and ordered by the physician.
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  Scientist Ibn Al-Haytham: He came up with an explanation for vision which would be considered the most important research in the field for the next 100 years.
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  Fredrick II: He promulgated a set of laws concerning medical education standards and licensure.
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  Eyeglasses: Eyeglasses became popular in Italy because they discovered they made for good vision.
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  Surgeon Theodoric Borgognoni: He came up with an antiseptic method of cleaning wounds.
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  Mondino De Luzzi: This physician conducted the first public dissection for his students and spectators.
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  Cadavers: The first cadavers were dissected, detailed drawings were made to show everything from muscle structure to the heart.
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  Cesarean Sections: The first written record of having both a mother and baby survive a cesarean section.
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  Philippus Aureolus Theophrastus Bonbast Von Hophenheim: He discovered that drinking mercury was a cure for deadly diseases.
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  Edward Jenner: He developed a way to protect people from smallpox by exposing them to the cowpox virus.
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  James Blundell: He performed the first successful transfusion of human blood.
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  Anesthetic: First nitrous oxide anesthetic is used for surgery
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  Vaccines: First vaccines for chlorea, anthrax, and rabies are performed.
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  German Physicist Wilhelm Conrad Roentgen: He discovers x-rays
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  Edward Mallenby: He discovers vitamin D and shows that its absence causes rickets.
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  Vaccine: First vaccine for tuberculosis
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  Bacteriologist Sir Alexander: He discovered Penicillin.
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  Bernard Fantus: He started the first blood bank
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  Paul Zoll: He created the first pacemaker to control irregular heartbeat
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  World Health Organization: They announce smallpox is eradicated.
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  HIV, the virus that causes AIDS is identified.
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  Mini Liver: The size of a small coin, the first mini liver is generated from human cord blood cells.
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  Mini Liver: The first mini liver is generated from human cord blood cells
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  Skin Cells: They discover how to use human skin cells to create embryonic skin cells.
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  Skin Cells: They discover how to use human skin cells to create embryonic stem cells.
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  Researchers from Cornell University 3D printed an outer ear that worked like and resembled a real ear.
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  Second Sight: This company received approval from the US Government to start marketing a bionic eye.
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  FDA: They approve the first human clinical trials in the United States for a wearable artificial kidney.