Possible alterations in correspondence associated with asymmetric convergence.
Available nonius horopter data in asymmetric convergence has been reanalyzed by computing the binocular disparity of each horopter datum point relative to the Vieth - Müller circle. The results of this analysis on the best available data indicate that some corresponding points do shift upon asymmetric gaze. Because such convergence postures involve different eye movement innervational patterns, it is suggested that this is the cause of these apparent alterations. Some of the remaining data showed nonsystematic changes in experimental errors, suggesting that unintentional shifts in fixation may have occurred; unintentional tactile cues (used in making the actual settings) may have been present; and sampling errors may have influenced these particular findings.
D005133:Eye Movements; D005403:Fixation, Ocular; D006801:Humans; D008297:Male; D009907:Optometry; D012160:Retina / Q000502:physiology*