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London Imaging Meeting, 2022
The Contrast Sensitivity Function (CSF) is an integral part of objective foveated image/video quality assessment metrics. In this paper, we investigate the effect of a new eccentricity-dependent CSF model on the performance of the foveated wavelet image quality index (FWQI).
Bozorgian, Aliakabar +2 more
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The Contrast Sensitivity Function (CSF) is an integral part of objective foveated image/video quality assessment metrics. In this paper, we investigate the effect of a new eccentricity-dependent CSF model on the performance of the foveated wavelet image quality index (FWQI).
Bozorgian, Aliakabar +2 more
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Effect of Peripheral Optical Quality on Spatial Contrast Sensitivity
Vision Science and its Applications, 1995The optical quality of the human eye is best for central vision and worsens for peripheral viewing conditions; most observers exhibit marked astigmatism for off-axis viewing (Jennings and Charman, 1981; Navarro, Artal and Williams, 1993). Whether or not correction of peripheral refractive error improves visual performance seems to depend on the visual ...
Nancy J. Coletta +2 more
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Age‐related changes in central and peripheral contrast sensitivity
Ophthalmic and Physiological Optics, 1997Purpose: Loss of foveal contrast sensitivity at mid‐high spatial frequencies with increasing age is well documented. The effects of increasing age on peripheral vision are less clear. This study examines the relative effects of age on contrast sensitivity at the fovea and in the periphery, using scaled 2D Gabor ...
Keziah Latham, Ian Ferguson, Ian Pacey
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Cortical magnification factor predicts the photopic contrast sensitivity of peripheral vision
Nature, 1978THE area of visual cortex devoted to the analysis of a con-slant-size region in the visual field diminishes progressively for more peripheral locations. The change is described quantitatively by the cortical magnification factor, which indicates the linear extent of cortex in mm corresponding to one degree of visual angle at various eccentricities ...
J, Rovamo, V, Virsu, R, Näsänen
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Journal of Cardiovascular Pharmacology, 1992
We studied the effects of naloxone [0.1 mg/kg intravenously (i.v.) or 7.5 micrograms/kg intracisternally (i.c.)], naloxone methyl iodide (NMI, 0.2 mg/kg, i.v. or 15 micrograms/kg i.c.) and morphine (2 mg/kg i.v.) on the cardiac baroreflex elicited in conscious rabbits especially bred for high and low baroreflex sensitivity (BRS) (group I, BRS > 5.5 ...
S, Weksler-Zangen +2 more
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We studied the effects of naloxone [0.1 mg/kg intravenously (i.v.) or 7.5 micrograms/kg intracisternally (i.c.)], naloxone methyl iodide (NMI, 0.2 mg/kg, i.v. or 15 micrograms/kg i.c.) and morphine (2 mg/kg i.v.) on the cardiac baroreflex elicited in conscious rabbits especially bred for high and low baroreflex sensitivity (BRS) (group I, BRS > 5.5 ...
S, Weksler-Zangen +2 more
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CENTRAL AND PERIPHERAL NORMAL CONTRAST SENSITIVITY FOR STATIC AND DYNAMIC SINUSOIDAL GRATINGS
Acta Ophthalmologica, 1983Contrast sensitivity for moving and stationary sine grating patterns was determined in central and peripheral parts of the visual field. The method was primarily developed as a possible screening procedure for visual defects in glaucoma. Contrast sensitivity to moving patterns seemed maximal both in central and in 10 degrees of eccentric viewing for ...
B L, Lundh +2 more
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Visual acuity, contrast sensitivity, peripheral vision and refraction in low birthweight teenagers
Acta Ophthalmologica Scandinavica, 2006Abstract.Purpose: To assess visual acuity (VA), contrast sensitivity, visual fields, refractive errors and use of correction in adolescents with very low birthweight (VLBW; birthweight < 1500 g) and adolescents born at term but small for gestational age (SGA; birthweight < 10th percentile) in a population‐based study.Methods: Ophthalmological ...
Lindqvist, Susanne +3 more
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Contrast sensitivity loss in the peripheral visual field following laser in situ keratomileusis
Journal of Cataract and Refractive Surgery, 2007We report a case of contrast sensitivity loss in the peripheral visual field following laser in situ keratomileusis (LASIK). A 50-year-old white man was referred to us for differences in visual perception in the peripheral field between the right eye, which had had LASIK, and the left eye, which was emmetropic.
Robert, Montés-Micó +1 more
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Ophthalmic and Physiological Optics, 2002
Abstract Previous studies using polychromatic gratings have shown that the peripheral grating contrast sensitivity function is significantly different when the task is resolution rather than detection. Specifically, in the middle frequency range, while resolution acuity drops suddenly to zero, detection ...
R S, Anderson +2 more
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Abstract Previous studies using polychromatic gratings have shown that the peripheral grating contrast sensitivity function is significantly different when the task is resolution rather than detection. Specifically, in the middle frequency range, while resolution acuity drops suddenly to zero, detection ...
R S, Anderson +2 more
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Central and peripheral contrast sensitivity for static and dynamic sinusoidal gratings in glaucoma
Acta Ophthalmologica, 1985Abstract. Contrast sensivity testing in glaucoma patients was extended from central, static patterns to include peripheral areas and dynamic gratings. The results were compared with age‐matched normals in visuo‐grams, and sensitivity defects were correlated to the location of visual field defects.
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