1. An adaptive eye-tracking system comprising a visual display having display points represented by display point coordinates and display data including display point coordinates; a camera generating video data representing a user's eye viewing the visual display; and a processor receiving said video data from said camera, estimating gaze data indicating eye-gaze positions and including time stamps, and associating said eye gaze positions with display point coordinates, calculating a gaze noise value using said eye gaze positions, calculating a saccade estimate using said gaze noise value and determining display point coordinates representing fixations using said saccade estimate and said associated eye gaze positions.