label: Internuclear ophthalmoplegia
label_lc: internuclear ophthalmoplegia
description: "An abnormality of conjugate lateral gaze in which the affected eye shows impairment of adduction. The pathognomonic clinical sign of internuclear ophthalmoplegia is an impaired adduction while testing horizontal saccades on the side of the lesion in the ipsilateral medial longitudinal fascicule."