title: Effect of differences in binocularity on perceived absolute distance.
abstract: 1. Using a 0.9 x 4.0 m visual alley, perceived absolute distance was studied in four groups of subjects: binocular, cross-eyed, monocular, and induced-monocular individuals. 2. A power function between the different physical and perceived distances was adjusted and the relative and absolute errors made by the observers were calculated. Despite a tendency to overestimate distance in the monocular group, no significant differences were detected among groups. 3. The data suggest that, under natural-cue conditions, binocularity is not a determining factor for the perception of absolute distance.
authors.affiliation: Departamento de Oftalmologia e Otorrinolaringologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brasil.
authors.forename: A A
authors.initials: AA
authors.lastname: Cruz
authors.forename: S S
authors.initials: SS
authors.lastname: Fukusima
authors.forename: P
authors.initials: P
authors.lastname: Schor
authors.forename: J A
authors.initials: JA
authors.lastname: Da-Silva
mesh_terms: D004215:Distance Perception / Q000502:physiology*; D006801:Humans; D014786:Vision Disorders / Q000503:physiopathology*; D015348:Vision, Binocular / Q000502:physiology*; D015349:Vision, Monocular / Q000502:physiology*; D014792:Visual Acuity