Kocher's sign

Kocher's sign is a medical sign that denotes an eyelid phenomenon in hyperthyroidism and Basedow's disease.{{cite book|title=Pennsylvania Medical Journal (1897-1923).|date=1918|page=484|url=https://books.google.com/books?id=R9IyAQAAMAAJ&q=Kocher%27s+sign+basedow|accessdate=17 January 2018|language=en}} In fixation on a fast upwards movement there occurs a convulsive retraction of the eyelid.{{cite web|url=http://www.whonamedit.com/synd.cfm/2249.html|title=Whonamedit - dictionary of medical eponyms|publisher=}}