Symptom 4. Nystagmus: Eyes in Constant Motion
Nystagmus, a condition characterized by involuntary, rapid, rhythmic eye movement, is another common symptom in cerebellar ataxia. This symptom could manifest as horizontal, vertical, or rotational movements, affecting one or both eyes. Nystagmus is typically a result of the cerebellum’s impaired regulation of eye movements and coordination, highlighting yet another facet of the cerebellum’s vast responsibilities.
The cerebellum plays a pivotal role in maintaining steady gaze and smoothly tracking moving objects. When cerebellar damage occurs, it can disrupt these functions, leading to nystagmus. The resulting incessant eye movements can cause vision problems, including blurred or double vision.
Nystagmus can profoundly affect an individual’s quality of life. Blurred or double vision can make it challenging to read, drive, or perform tasks that require visual precision. It can also cause dizziness and balance problems, exacerbating the physical instability often experienced in cerebellar ataxia. (4)
