Superior Oblique Myokymia

Example of patients with superior oblique myokymia, a saccadic intrusion. First patient is seen to have intermittent, intorting movements with superimposed slight vertical deviations in right eye. Discussion of disorder as benign, but frequently disabling, as patients experience episodes of diplopia. Second patient shows a more prominent example of superior oblique myokymia in the left eye. Discussion of how to evoke the movement by having the patient gaze in the direction of the superior oblique muscle, and then back to forward gaze.