Visual fields described by contrast sensitivity, by acuity, and by relative sensitivity to different orientations.

Sinewave grating contrast sensitivity was measured as a function of eccentricity and azimuthal angle for four orientations of gratings whose spatial frequencies ranged from 2 to 20 c/deg. Visual fields for cutoff spatial frequency were also mapped. Log contrast sensitivity fell off approximately linearly with eccentricity for all azimuths. Orientational differences in contrast sensitivity varied irregularly over the visual field and, though small for central vision, could reach as high as 25 dB in localized patches at eccentricities greater than about 12 degrees.

[1]  D. W. Watkins,et al.  Grating visibility as a function of orientation and retinal eccentricity , 1975, Vision Research.

[2]  R Hilz,et al.  Functional organization of the peripheral retina: sensitivity to periodic stimuli. , 1974, Vision research.

[3]  C. A. Burbeck.  Criterion-free pattern and flicker thresholds. , 1981, Journal of the Optical Society of America.

[4]  J. Rovamo,et al.  Cortical magnification factor predicts the photopic contrast sensitivity of peripheral vision , 1978, Nature.

[5]  J. McCann,et al.  Visibility of low-spatial-frequency sine-wave targets: Dependence on number of cycles. , 1975, Journal of the Optical Society of America.

[6]  C. R. Cavonius,et al.  Low-frequency attenuation in the detection of gratings: Sorting out the artefacts , 1976, Vision Research.

[7]  I. Bodis-Wollner,et al.  The measurement of spatial contrast sensitivity in cases of blurred vision associated with cerebral lesions. , 1976, Brain : a journal of neurology.

[8]  U. T. Keesey.  Flicker and pattern detection: a comparison of thresholds. , 1972, Journal of the Optical Society of America.

[9]  Measurement of acuity variations within the central visual field caused by neurological lesions. , 1975, Journal of neurology, neurosurgery, and psychiatry.

[10]  W. Levick,et al.  Analysis of orientation bias in cat retina , 1982, The Journal of physiology.

[11]  Jan J. Koenderink,et al.  Perimetry of contrast detection thresholds of moving spatial sine wave patterns. II. The far peripheral visual field (eccentricity 0°–50°) , 1978 .

[12]  D Regan,et al.  Orientation-specific losses of contrast sensitivity in multiple sclerosis. , 1980, Investigative ophthalmology & visual science.

[13]  G. J. van der Wildt,et al.  Contrast sensitivity as a function of position on the retina , 1980, Vision Research.

[14]  G B Arden,et al.  A simple grating test for contrast sensitivity: preliminary results indicate value in screening for glaucoma. , 1978, Investigative ophthalmology & visual science.

[15]  F W Campbell,et al.  Subtle disturbances of vision after optic neuritis elicited by studying contrast sensitivity. , 1979, Journal of neurology, neurosurgery, and psychiatry.

[16]  P. Hammond.  Cat retinal ganglion cells: size and shape of receptive field centres , 1974, The Journal of physiology.

[17]  O. Bryngdahl.  Perceived contrast variation with eccentricity of spatial sine-wave stimuli. Size determination of receptive field centres. , 1966, Vision research.

[18]  C. E. Ferree,et al.  REFRACTION FOR THE PERIPHERAL FIELD OF VISION , 1931 .

[19]  B N Timney,et al.  Orientation anisotropy: incidence and magnitude in Caucasian and Chinese subjects. , 1976, Science.

[20]  C. D. Hendley,et al.  Visual evoked potentials and the visuogram in multiple sclerosis , 1979, Annals of neurology.

[21]  D. Tolhurst,et al.  Psychophysical evidence for sustained and transient detectors in human vision , 1973, The Journal of physiology.

[22]  Arthur P Ginsburg,et al.  Visual Information Processing Based on Spatial Filters Constrained by Biological Data. , 1978 .

[23]  L Frisén,et al.  Optical and neural resolution in peripheral vision. , 1975, Investigative ophthalmology.

[24]  C. J. Keemink,et al.  Gradient detection and contrast transfer by the human eye , 1976, Vision Research.