Definitions:

1. A rapid, involuntary movement of the eye as it shifts from one point of focus to another. NOUN
   • Surprise auditory stimuli can trigger rapid saccades involuntarily.
2. A rapid, jerky movement of the eyes between positions of rest. NOUN
   • Reading involves rapid saccades as the eyes jump from one word to the next.

Synonyms:

• jerk
• jerking
• jolt
• movement of an eye