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.
Eye Floaters and Spots In Your Vision. Floaters come and go with eye movement. When you move your eye quickly up, down or to the side, you may see these floaters move in your light of sight, then disappear into your peripheral vision. This phenomena is caused by a reflection of microscopic fibers in the jelly-like substance (the vitreous humor) contained inside your eye, onto the retina.