A 48-year-old woman had a history of diplopia induced by swallowing. During the initial volitional phase of deglutition, the left globe was seen to intort and move downward. To the best of our knowledge, this is the first report of this peculiar congenital cranial nerve synkinesis.
McLeod AR, Glaser JS. Deglutition—Trochlear Synkinesis. Arch Ophthalmol. 1974;92(2):171-172. doi:10.1001/archopht.1974.01010010177020