Haab Reflex

Ophthalmology, Physiology

Also known as: Haab's reflex, Cerebral cortex light reflex

Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.

The Haab reflex is a cortical visual reflex described in the early 20th century. It involves the constriction of the pupil in a dark room when a subject focuses their attention on a peripheral light source without moving their eyes toward it.

Encyclopedia entry (1928–1936)

HAAB REFLEX (Haab), a cortical visual reflex characterized by the constriction of the pupil in a dark room when concentrating attention on light rays emanating from a source located to the side of the subject, without turning the eyes toward the light source.

Mentioned in

Ideomotor Reflex

Cite this page

“Haab Reflex.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/haab-reflex/