Nystagmus
From Wikipedia, the free encyclopedia
Nystagmus is a type of eye movement characterized by alternating slow phase movements in one direction and Saccade-like quick phases in the other direction. Nystagmus may be:
- Physiologic nystagmus when occurring normally and serving its normal function. In this case the slow phases are vestibulo-ocular reflex movements that stabilize vision during head movement, whereas the fast phases are re-setting movements.
- Pathologic nystagmus when occurring abnormally. In this case the slow phases may be due to a vestibular imbalance or due to failure in the eye position-holding mechanisms of the oculomotor system.
 |
This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article. |
