Features of Manifestation of Optokinetic Nystagmus in Meniere’S Disease

Abstract

The characteristics of optokinetic nystagmus (O?N) were studied in 20 healthy individuals and 30 individuals
suffering from Meniere’s disease in remission. The results recorded by the method of electronystagmography
at frequency optokinetic stimulation 66,90 156 and field/min. found that in healthy people, the frequency
of IPOs, the total amplitude and the speed of the slow phase(sp) nystagmus increases proportional to the
increase in the frequency optokinetic stimulation; accordingly, consistently reduced the average amplitude
window. In Meniere’s disease, O?N indicators are generally characterized by lower values than normal,
and an increase in the frequency of optokinetic stimulation is accompanied not only by a more pronounced
decrease in the total amplitude indicators, but also by a decrease in the speed of the slow phase of O?N.
After the glycerol load and with positive results of the glycerol test, the quantitative indicators of O?N
increase in patients, approaching the physiological norm. It is concluded that it is appropriate to study the
O?N in Meniere’s disease to clarify the stage of the disease and predict the effectiveness of treatment.