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.
Introduction. Double vision (medically known as diplopia) is seeing two images of a single object. The two images may be one on top of the other, side by side, or a mix of both.Double vision may be constant, it may come and go, or it may only occur when you're looking in a particular direction.f your eye muscles or nerves are damaged, the muscles may not be able to control your eyes properly and you may develop double vision. Your eye muscles can also be weakened as a result of a health condition, or your eyes may not be aligned properly.