Eye position prediction in the case of nystagmus and refixations

Nystagmus is a condition in which the eyes move in an uncontrolled fashion. These eye movements confound attempts to identify patient fixation, as desired eye positions cannot be maintained. We aim to estimate the eye positions in the case of refixations and superimposed uncontrolled motion. By incorporating saccade detection and resetting our estimation algorithms, we are able to track the nystagmus motion independently of fixation direction. We employ our algorithm on data collected from patients with latent/manifest-latent and pendular nystagmus conditions.