Definition: involuntary, irregular multidirectional  saccadic eye movements.
Occurs at fixed gaze and has been reported with various medication overdoses such as organophosphates, lithium, cetirizine, amitryptiline, and diphenhydramine.
Opsoclonus
Benign paroxysmal positional vertigo
Chorea
Brain tumors
Catatonia
ICH
Dysphonia
Lateral medullary syndrome