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.
This condition is sometimes called âdancing eyes.â Read More. Nystagmus is a condition that causes involuntary, rapid movement of one or both eyes. Nystagmus often occurs with vision problems, including blurriness. This condition is sometimes called âdancing eyes.â Symptoms of nystagmus. The symptoms include fast, uncontrollable eye movements. The direction of movement determines the type of nystagmus: Horizontal nystagmus involves side-to-side eye movements. Vertical nystagmus involves up-and-down eye movements. Rotary, or torsional, nystagmus involves circular movements. These movements may occur in one or both eyes depending on the cause.