title: The effect of perceived distance on accommodation under binocular steady-state conditions.
abstract: Spatiotopic cues, such as perceived distance, have little effect on accommodation unless blur has been reduced or eliminated. We investigated the effect of perceived distance on accommodation under binocular steady-state conditions, about which little is known. Blur was reduced but not eliminated by using a stimulus with a moderately low luminance. Accommodation was measured under two conditions: (1) when cues from perceived distance, blur, and convergence were aligned; and (2) when perceived distance was opposed by both blur and convergence. We found a significant difference in accommodation between the two conditions, which we attribute to perceived distance.
authors.affiliation: Visual Sciences Branch, U.S. Army Aeromedical Research Laboratory, Fort Rucker, AL 36362-0577, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Kotulak
authors.forename: S E
authors.initials: SE
authors.lastname: Morse
mesh_terms: D000065:Accommodation, Ocular / Q000502:physiology*; D000328:Adult; D003290:Convergence, Ocular / Q000502:physiology; D003463:Cues; D004215:Distance Perception / Q000502:physiology*; D006801:Humans; D008029:Lighting; D010364:Pattern Recognition, Visual / Q000502:physiology; D015348:Vision, Binocular / Q000502:physiology*