Source:allaboutvision
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 points of view.
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:
- Manifest nystagmus
- Congenital nystagmus
- Manifest-latent nystagmus
- Acquired nystagmus
- Latent nystagmus