There is provided a method, system, and non-transitory computer-readable storage medium for classifying glints (105) using an eye tracking system (200) of a head-mounted device (260), by obtaining the position of any glint (105) present in a current image (image<sub>t+1</sub>) of the first eye (100); obtaining a dataset indicative of the respective position of at least one glint (105) detected in one or more previously captured images of the first eye (100); and, for each glint (105) present in current image (image<sub>t+1</sub>), determining if the position of the glint (105) corresponds to the position of a glint (105) in the dataset and, if the positions correspond, classify the glint (105) as a static glint (107). The static glints (107) may be excluded from further processing in the eye tracking system (200). If there has been a movement of an eye (100) of the user (260) of the head-mounted device (270), embodiments may further comprise updating the dataset based on the current image (image<sub>t+1</sub>).
CLASSIFICATION OF GLINTS USING AN EYE TRACKING SYSTEM