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Nystagmus Causes, Symptoms and Challenges
As mentioned above, most people with nystagmus are born with the condition or develop it early in life. Unless induced by trauma or disease, nystagmus almost always is caused by neurological problems.
The two basic types of nystagmus are:
- Optokinetic (eye related)
- Vestibular (inner ear related)
Nystagmus - A Guide
Nystagmus most commonly causes the eyes to look involuntarily from side to side in a rapid, swinging motion rather than staying fixed on an object or person. Some nystagmuses, however, cause the eyes to jerk sideways or up and down.
Aside from being a condition I see professionally, nystagmus also affects a very close friend of mine. So I 
can discuss this eye problem from several viewpoints.
Nystagmus is usually infantile, meaning people have it from a very early age. Experts say that about one child out of every several thousand has nystagmus. Different kinds of nystagmus include:
- Congenital nystagmus
- Manifest nystagmus
- Latent nystagmus
- Manifest-latent nystagmus
- Acquired nystagmus