BILATERAL OCULAR NEUROMYOTONIA - OCULOGRAPHIC CORRELATIONS

We observed bilateral ocular neuromyotonia in a 45-year-old woman prev iously treated for a pituitary adenoma. She experienced episodic diplo pia attributable to dysfunction of muscles innervated by both oculomot or nerves. Oculography demonstrated episodes of tonic adduction with s lowing and restriction of saccades in all directions, but no oscillato ry component. A combination of impaired phasic firing in agonist muscl es and tonic contraction of antagonist muscles explains the paroxysms of eye movement limitation in this disorder.