Ocular flutter (OF) is a pathologic condition of the oculomotor system characterized by bursts of irregular eye movements during which the patient may experience oscillopia. In this study, we report two cases of OF. One patient was a 47-year-old male who has very long (over 10 years) history of oscillopia and we initially diagnosed him as having OF by precise neuro-otological investigation. The other patient was a 15-year-old female whose OF was highly typical and the diagnosis was not difficult to establish. We administered carbamazepine, bacrofen, and diazepam to both patients, but these medicines did not suppress the bursts of irregular eye movements and did not decreased oscillopia or dizziness in either patient. However, only choto-san was very effective especially in first case. We discuss the potential efficacy of choto-san for saccade abnormality in patients with OF.
