David Klein (ophthalmologist)
Encyclopedia
David Klein was a Swiss
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 human geneticist
Geneticist
A geneticist is a biologist who studies genetics, the science of genes, heredity, and variation of organisms. A geneticist can be employed as a researcher or lecturer. Some geneticists perform experiments and analyze data to interpret the inheritance of skills. A geneticist is also a Consultant or...

 and ophthalmologist
Ophthalmology
Ophthalmology is the branch of medicine that deals with the anatomy, physiology and diseases of the eye. An ophthalmologist is a specialist in medical and surgical eye problems...

.

Klein graduating from the University of Basel
University of Basel
The University of Basel is located in Basel, Switzerland, and is considered to be one of leading universities in the country...

 in 1934. After graduating, he worked at the Rheinau Psychiatric Clinic, Zurich
Zürich
Zurich is the largest city in Switzerland and the capital of the canton of Zurich. It is located in central Switzerland at the northwestern tip of Lake Zurich...

. He moved to Geneva
Geneva
Geneva In the national languages of Switzerland the city is known as Genf , Ginevra and Genevra is the second-most-populous city in Switzerland and is the most populous city of Romandie, the French-speaking part of Switzerland...

 as scientific assistant to professor Adolphe Franceschetti at the ophthalmological clinic. In 1970 he was appointed full professor. He retired in 1978 with the status of professor emeritus. After retirement, he was active as consultant in human genetics at the ophthalmological clinic, Geneva, and the school of amblyopic and blind children in Baar, Switzerland
Baar, Switzerland
Baar is a village in the canton of Zug in Switzerland.-Geography:Baar has an area, , of . Of this area, 55% is used for agricultural purposes, while 24.5% is forested...

.

Klein made contributions towards the understanding of Waardenburg syndrome
Waardenburg syndrome
Waardenburg syndrome Waardenburg syndrome Waardenburg syndrome (also Waardenburg­ Shah Syndrome, Waardenburg-Klein syndrome, Mende's syndrome II, Van der Hoeve-Halbertsma-Waardenburg syndrome, Ptosis-Epicanthus syndrome, Van der Hoeve-Halbertsma-Gualdi syndrome, Waardenburg type Pierpont,[5] Van...

, or more fully, the van der Hoeve-Halbertsma-Waardenburg-Klein syndrome. In August 1947 Klein presented a deaf mute child, who was 10 years of age, and had partial albinism
Albinism
Albinism is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin...

of the hair and body, blue, hypoplastic rides, blepharophimosis and malformation of arms, to the Swiss Society of Genetics, and gave a full report of his findings in 1950.
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