Bard's Sign
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Bard's sign is a clinical diagnostic sign used to differentiate between acquired and congenital nystagmus. It is characterized by an increase in the speed of oscillations when the patient follows the examiner's finger moving laterally and posteriorly.
Encyclopedia entry (1928–1936)
BARD'S SIGN (Bard), is manifested in acquired organic nystagmus by an increase in the speed of oscillations when the patient follows the examiner's finger with their eyes as it is moved posteriorly and to the side. In congenital nystagmus, the oscillations do not increase from this.
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Cite this page
“Bard's Sign.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/bards-sign/