Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Nystagmus
Medically reviewed by Min Clinic Staff | Updated: January 2026
Nystagmus: Rapid, rhythmic, repetitious, and involuntary eye movements. Nystagmus can be horizontal, vertical, or rotary. Whatever form it takes, nystagmus is an abnormal eye finding and a sign of disease within the eye or the nervous system.