Niels Ryberg Finsen


Niels Ryberg Finsen
(1860 - 1904)


Danish physician, founder of modern phototherapy (the treatment of disease by the influence of light), who received the 1903 Nobel Prize for Physiology or Medicine for the application of light in the treatment of skin diseases.
While a student at the University of Copenhagen (M.D., 1890), Finsen became interested in the effects of light on living organisms and in 1893 found that lengthy exposure of smallpox sufferers to the red light formed by exclusion of the violet end of the spectrum prevents the suppuration of the pustules, or formation of characteristic pockmarks. Aware of the bacteria-destroying effects of sunlight, he developed an ultraviolet treatment for lupus vulgaris, a form of skin tuberculosis, which met with great success. Although phototherapy has largely been superseded by other forms of radiation and drug therapy, Finsen's work did much to encourage the radiation therapy then being developed and led to the use of ultraviolet sterilization techniques in bacteriological research. Finsen's Medical Light Institute (now the Finsen Institute) was founded in Copenhagen in 1896.



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