Bernhard Kayser (6 August 1869, in

Bremen Bremen (Low German also: ''Breem'' or ''Bräm''), officially the City Municipality of Bremen (german: Stadtgemeinde Bremen, ), is the capital of the German state Free Hanseatic City of Bremen (''Freie Hansestadt Bremen''), a two-city-state consis ...

– 11 May 1954, in

Stuttgart Stuttgart (; Swabian: ; ) is the capital and largest city of the German state of Baden-Württemberg. It is located on the Neckar river in a fertile valley known as the ''Stuttgarter Kessel'' (Stuttgart Cauldron) and lies an hour from the ...

) was a German

ophthalmologist Ophthalmology ( ) is a surgery, surgical subspecialty within medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Followin ...

. He studied at

Tübingen Tübingen (, , Swabian: ''Dibenga'') is a traditional university city in central Baden-Württemberg, Germany. It is situated south of the state capital, Stuttgart, and developed on both sides of the Neckar and Ammer rivers. about one in thr ...

and

Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ...

, receiving his doctorate from the

University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative o ...

in 1893. Afterwards, he worked as an intern in

and as an assistant physician in

Freiburg im Breisgau Freiburg im Breisgau (; abbreviated as Freiburg i. Br. or Freiburg i. B.; Low Alemannic German, Low Alemannic: ''Friburg im Brisgau''), commonly referred to as Freiburg, is an independent city in Baden-Württemberg, Germany. With a population o ...

. He was then employed as a ship's physician by the North German Lloyd Shipping Company and spent 2½ years in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

as a general practitioner. He later worked as a physician in

Brandenburg Brandenburg (; nds, Brannenborg; dsb, Bramborska ) is a states of Germany, state in the northeast of Germany bordering the states of Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony, as well as the country of Poland. With an ar ...

and

, during which time, he developed an interest in ophthalmology. In 1903 he became a specialist in ophthalmology and relocated to Stuttgart, where he spent the remainder of his life. For many years he was editor of the essay section of the '' Klinische Monatsblätter für Augenheilkunde''.

Kayser–Fleischer ring Kayser–Fleischer rings (KF rings) are dark rings that appear to encircle the cornea of the eye. They are due to copper deposition in the Descemet's membrane as a result of particular liver diseases. They are named after German ophthalmologists ...

s are named after him and

Bruno Fleischer Bruno Otto Fleischer (2 May 1874 – 26 March 1965) was a German ophthalmologist. Kayser-Fleischer rings and Fleischer ring Fleischer rings are pigmented rings in the peripheral cornea, resulting from iron deposition in basal epithelial cells, i ...

. Kayser described the condition in a 1902 paper titled ''Über einen Fall von angeborener grünlicher Verfärbung des Cornea''.Kayser-Fleischer ring
at

Who Named It ''Whonamedit?'' is an online English-language dictionary of medical eponyms and the people associated with their identification. Though it is a dictionary, many eponyms and persons are presented in extensive articles with comprehensive bibliograph ...

References

1869 births 1954 deaths German ophthalmologists University of Tübingen alumni Physicians from Bremen (city) Eye color {{Germany-med-bio-stub