Isolated unilateral post-traumatic internuclear ophthalmoplegia.
A patient developed an isolated unilateral internuclear ophthalmoplegia (INO) after head trauma. An uncommon complication of closed head trauma, INO usually occurs bilaterally and is often associated with other neurologic deficits. The mechanism may be shear injury caused by angular acceleration leading to downward displacement of the posterior brainstem downward, stretching of the nerve fibers of the medial longitudinal fasciculus, or compression and tearing of its arterial supply.
Chan
J W
JW
Division of Neurology, Department of Internal Medicine, University of Nevada, School of Medicine, Las Vegas, Nevada 8912, USA. worjun@aol.com
D000328:Adult; D001933:Brain Stem / Q000473:pathology; D016489:Head Injuries, Closed / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009886:Ophthalmoplegia / Q000175:diagnosis / Q000209:etiology*; D014057:Tomography, X-Ray Computed