Karl Koller (ophthalmologist)

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Karl Koller
Karl Koller
Born	(1857-12-03)December 3, 1857 Sušice, Bohemia, Austrian Empire
Died	March 21, 1944(1944-03-21) (aged 86) New York City, United States
Nationality	Austrian
Known for	Cocaine as a local anaesthetic
Scientific career
Fields	Ophthalmology

Karl Koller (December 3, 1857 – March 21, 1944) was an Austrian ophthalmologist. He began his medical career as a surgeon at the Vienna General Hospital and a colleague of Sigmund Freud.