Ocular Flutter associated with Merkel Cell Carcinoma

Ocular flutter is a relatively rare eye movement disorder that refers to occasional bursts of involuntary horizontal oscillation around the point of fixation, characterized by rapid, repetitive, horizontal, symmetrical and sinusoidal oscillation without inter- saccadic interval. It is known to be associated with disorders of the cerebellum and brainstem resulting from various pathological conditions, but it's anatomical and pathophysiological basis remains unclear. Here, we present the case of a patient who had severe ocular flutter associated with Merkel cell carcinoma.