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J Neurosurg. 2012 Dec;117(6):1166-9. doi: 10.3171/2012.9.JNS112361. Epub 2012 Sep 28.

Ocular neuromyotonia treated by microvascular decompression: usefulness of preoperative 3D imaging: case report.

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  • 1Department of Neurosurgery, Subarukai Kotoh Kinen Hospital, Shiga, Japan.


Ocular neuromyotonia is a rare ocular motility disorder characterized by involuntary contraction of extraocular muscles resulting in paroxysmal diplopia. Although ocular neuromyotonia is reported as a rare complication after radiation therapy, there are a few cases of ocular neuromyotonia in the absence of irradiation. In the reported cases the possibility of vascular compression has been suggested on radiological imaging. The authors report a case of ocular neuromyotonia treated by microvascular decompression of the third cranial nerve, supporting the hypothesis that neurovascular compression may play a role in its pathogenesis. The usefulness of preoperative 3D imaging for microvascular decompression is also discussed.

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