title: Relationship of heterophoria to stereopsis.
abstract: Eighty patients with 6/7.5 (20/25) or better visual acuity in each eye noted differences in stereoacuity with crossed and uncrossed disparity. Esophoric patients who perceived a difference were more likely to have greater stereoacuity with uncrossed disparity, and exophoric patients who perceived a difference were more likely to have greater stereoacuity with crossed disparity. Asymmetry of Panum's area may be a factor in this phenomenon.
mesh_terms: D004948:Esotropia / Q000503:physiopathology; D005099:Exotropia / Q000503:physiopathology; D005403:Fixation, Ocular; D006801:Humans; D012160:Retina / Q000503:physiopathology; D014792:Visual Acuity; D014796:Visual Perception / Q000502:physiology*