title: Effect of optical aberrations on the color appearance of small defocused lights.
abstract: We investigated influences of optics and surround area on color appearance of defocused, small narrow band photopic lights (1' arc diameter, lambda(max) 510-628 nm) centered within a black annulus and surrounded by a white field. Participants included seven normal trichromats with L- or M-cone biased ratios. We controlled chromatic aberration with elements of a Powell achromatizing lens and corrected higher-order aberrations with an adaptive optics system. Longitudinal chromatic aberrations, but not monochromatic aberrations, are involved in changing appearance of small lights with defocus. Surround field structure is important because color changes were not observed when lights were presented on a uniform white surround.
authors.affiliation: School of Optometry and Institute of Health & Biomedical Innovation, Queensland University of Technology, Kelvin Grove 4059 Q, Australia.
authors.forename: Preeti
authors.initials: P
authors.lastname: Gupta
authors.forename: Huanqing
authors.initials: H
authors.lastname: Guo
authors.forename: David A
authors.initials: DA
authors.lastname: Atchison
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Zele
mesh_terms: D000328:Adult; D003116:Color; D055253:Color Vision / Q000502:physiology* / Q000528:radiation effects*; D005128:Eye Diseases / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008027:Light; D008297:Male; D008875:Middle Aged