The purpose of eye movements.
D000818:Animals; D005133:Eye Movements; D005584:Fovea Centralis / Q000502:physiology; D006801:Humans; D009068:Movement; D012018:Reflex / Q000502:physiology; D012160:Retina / Q000502:physiology; D014722:Vestibule, Labyrinth / Q000502:physiology; D014785:Vision, Ocular / Q000502:physiology*