Traumatic bilateral internuclear ophthalmoplegia with plus syndrome.

A young man in his 20s sustained head and body injuries after a fall from a height, 1 year ago for which he received emergency medical and surgical intervention. A month after the trauma, he noticed outward deviation of the right eye intermittently but did not experience diplopia. On examination, he had a bilateral adduction deficit, bilateral abduction nystagmus and a bilateral vertical nystagmus.