noun. 1  a. An old French dance resembling the gavotte, usually in 3/4 or 2/2 time beginning with an upbeat. 2  A movement in ballet in which the dancer transfers body weight quickly from foot to foot, usually on the balls of the feet, in a series of small steps.
Nystagmus is a condition where the eyes make repetitive movements. The eyes can jerk exclusively in one direction, or make back and forth movements. With nystagmus, the eye can look jittery and can affect both eyes or just one eye.
Nystagmus is the name for an uncontrolled movement of the eyes. They can move in any direction: side to side, around or up and down. Many people with MS who have nystagmus donât realise they have it, as the movement has little or no effect on their vision.