Acquired nystagmus

Traditionally, acquired forms of nystagmus have been classified in descript ive terms based on their clinical features and recorded waveforms. In the p ast 20 years, the mechanisms of several major forms of nystagmus have been elucidated; animal and mathematical models for these ocular oscillations ha ve been developed. These advances, which owe much to modem anatomical, phys iological, and pharmacological techniques, have enhanced the diagnostic val ue of nystagmus and provide: the basis for developing rational therapy.