[Some characteristics of optokinetic nystagmus in patients with unilateral vestibular neuronitis].

Optokinetic reflex was studied in 20 patients aged 20-58 years with vestibular neuronitis. In 16 decompensated patients the direction of the optokinetic nystagmus was inversed. This inversion disappeared in development of the compensation. Mean values of the amplitude and speed of the slow phase of optokinetic nystagmus are presented for patients with vestibular neuronitis and 20 healthy subjects in mono- and binocular optokinetic stimulation of various intensity.