Blink- and saccade-induced seesaw nystagmus.

A 29-year-old woman with bitemporal hemianopia persisting after a suprasellar germinoma was resected twelve years previously had brief periods of pendular seesaw nystagmus after blinks and horizontal or vertical saccades. Nystagmus may have been suppressed during fixation, and escaped only when fixation was interrupted by blinks or saccades.