Is the rod visual field temporally homogeneous?
Cone vision has been shown to be temporally inhomogeneous across the visual field. In the periphery, contrast sensitivity is lower for low temporal frequencies and higher for high temporal frequencies. Here we ask a similar question for rod vision at mesopic luminances. Isolation is obtained by testing a well documented rod monochromat. We show that the rod visual field exhibits only a modest degree of temporal inhomogeneity.
Allen
D
D
College of Optometry, University of Houston, TX, USA.
Hess
R F
RF
Nordby
K
K
D003117:Color Vision Defects / Q000503:physiopathology; D015350:Contrast Sensitivity / Q000502:physiology; D006801:Humans; D008027:Light; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011601:Psychophysics; D017948:Retinal Rod Photoreceptor Cells / Q000502:physiology*; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors; D014794:Visual Fields