- A dictionary of medical eponyms

Wernicke's pupillary reaction

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The absence of direct reaction to light in the blind part of the retina. This occurs in hemianopsies, which are caused by a lesion in the tractus opticus.

First discovered in 1881 by Hermann Wilbrand (1851-1935), and again in 1883 by Wernicke.


  • H. Wilbrand:
    Die Seelenblindheit als Herderscheinung und ihre Beziehungen zur homonymen Hemianopsie, zur Alexie und Agraphie.
    Wiesbaden, 1886. hemianopischen Gesichtsfeldformen und das optische Wahrnehmungscentrum.
    Wiesbaden, 1890.
  • C. Wernicke:
    Über hemiopische Pupillenreaktion.
    Fortschritte der Medicin, 1883, 1: 49-53.

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