C&P Service Clinician's Guide - Veterans Affairs

Gaze nystagmus that is strongest for gaze in the direction of the fast phase is usually caused by peripheral lesions. According to Alexander’s Law, first-degree nystagmus is strongest with lateral gaze in the direction of the fast phase. Second-degree nystagmus occurs when gaze nystagmus is noted in the primary position and with lateral gaze ... ................
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