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.
Cornea: The clear window into your eye. Its main job is to focus light. If your double vision goes away when you cover one eye, you might have cornea damage in the uncovered eye. If only one cornea is warped, you may only see double in that eye. Glasses can probably fix the problem. Damage can be from: