Hirschberg's Symptom
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Hirschberg's symptom is a pupillary sign where the pupil on the affected side reacts little or not at all to direct light, but constricts when the other eye is illuminated, while the consensual reaction of the healthy eye is absent when the affected side is illuminated. This sign is diagnostically important in unilateral retrobulbar optic nerve diseases that are not yet detectable by ophthalmoscopy.
Encyclopedia entry (1928–1936)
HIRSCHBERG'S SYMPTOM consists in the fact that the pupil on the affected side reacts little or not at all to direct light, but constricts when the other eye is illuminated, whereas when the affected side is illuminated, the consensual reaction of the healthy eye is absent. Hirschberg's symptom is diagnostically important in unilateral retrobulbar diseases of the optic nerves that are not yet detectable ophthalmoscopically.
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Cite this page
“Hirschberg's Symptom.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/hirschbergs-symptom/