Ocular translation and cyclotorsion due to changes in fixation distance.
D005133:Eye Movements; D005403:Fixation, Ocular; D006801:Humans; D007498:Iris / Q000502:physiology*; D009801:Oculomotor Muscles / Q000502:physiology; D011601:Psychophysics; D011680:Pupil / Q000502:physiology; D012399:Rotation