noun. involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders.
- eye movement
- rotational nystagmus
- physiological nystagmus
Example sentences of the word nystagmus
1. Noun, singular or mass
It is important for persons with nystagmus to have a thorough eye examination by an ophthalmologist to determine the cause and best course of treatment.
2. Noun, plural
You should contact your doctor if you think your child may have nystagmus.
Dextromethorphan can also cause your eyes to move back and forth involuntarily, which is called nystagmus.
When someone with nystagmus looks in an odd direction, a “null point” is found where symptoms are reduced.
5. Foreign word
Most often, nystagmus is involuntary and reduces or limits vision because rhythmic shaking or jerking of the eyes makes it difficult to focus.
Untreated hypomagnesemia, which may result in continued loss of the electrolyte, potentially progresses to abnormal eye movements -- nystagmus** -- and convulsions.