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-tracking issues exist when one or both eyes have difficulty moving smoothly and accurately in this side-to-side motion. Here is an example of the type of eye movements eye-tracking issues would create. Try to follow along with the words and see if you can understand what it is saying. Eye-tracking issues can also include difficulty focusing on one spot (like fixating on one word on the page.