Evaluation of the "opto-kinetic pattern test (OKP test)"--results on the vestibulo-oculomotor dysfunction and local diagnosis

Abstract

The author reported on the results of the 0KP test in 474 cases of vestibulo-oculomotor dysfunction. Some cases of the lesions in the CNS were verified by surgical operation and autopsy. In some cases of the peripheral vestibular lesions, diagnosis was given by precise neurological examinations. 1. OKP test is a examination for the pure oculomotor function and the test reveals typical pattern in the CNS lesions. The test plays an important role for the diagnosis of the lesion in the tegmentum of the brain stem i.e. so called Silent area 2. OKP in the peripheral vestibular disorder reveals typical pattern and is usefull for the deection of the side of the lesion as well. 3. Further OKP test is a usefull tool not only for the observation of the recovery process of the vestibular imbalance, central compensatory process and the evaluation of the postoperative relapse of the brain tumor, but also usefull for the differential diagnosis of nystagmus and for the evaluation of the dynamic oculomotor disturbances. Special attention should be paid on the result of the examination to eliminate the diseases of the eye ball itself and the accessory apparatus of the eye ball. Age, state of the alertness interfare the result occasionally, so that the examination should be carried out under interested gaze.'