Results 21 to 30 of about 2,583,441 (289)
Contrast sensitivity and discrimination in pictorial images [PDF]
, 2014 This paper describes continuing research concerned with the measurement and modeling of human spatial contrast sensitivity and discrimination functions, using complex pictorial stimuli.
Gupta, G. +5 more
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Journal of Ginseng Research, 2021 Background: Red ginseng has been found to improve ocular perfusion and dry eye syndrome in glaucomatous eyes; however, its effects on visual function and vision-related quality of life have not been investigated. This study sought to evaluate the effects
Kwanghyun Lee +7 more
doaj +1 more source
Double-pass technique and compensation-comparison method in eyes with cataract [PDF]
, 2016 PURPOSE To clinically assess the objective scatter index (OSI) obtained from double-pass images and the log(s) parameter measured with the direct compensation-comparison psychophysical technique in eyes with cataract.
Almudí Cortés, Lorena +7 more
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Letter contrast sensitivity function of the eye [PDF]
Acta Ophthalmologica Scandinavica, 1998 To provide empirical data of letter CSF for various levels of defocus under controlled conditions of luminance and age.Corrected distance visual acuities were tested at different levels of contrast and defocus. An experiment was conducted using the Medmont visual acuity tester on 10 young subjects and under normal room lighting.Empirical data of visual
H L, Liou, N A, Brennan
openaire +2 more sources
Next-generation vision testing: the quick CSF
Current Directions in Biomedical Engineering, 2015 The Contrast Sensitivity Function relates the spatial frequency and contrast of a spatial pattern to its visibility and thus provides a fundamental description of visual function.
Dorr Michael +6 more
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The Effects of tDCS Across the Spatial Frequencies and Orientations that Comprise the Contrast Sensitivity Function [PDF]
, 2015 Richard B, Johnson AP, Thompson B and Hansen BC (2015) The Effects of tDCS Across the Spatial Frequencies and Orientations that Comprise the Contrast Sensitivity Function. Front. Psychol. 6:1784.
Hansen, Bruce C. +3 more
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Factors Affecting Contrast Sensitivity in Healthy Individuals: A Pilot Study
Türk Oftalmoloji Dergisi, 2017 Objectives: To determine the demographic and ocular features affecting contrast sensitivity levels in healthy individuals. Materials and Methods: Seventy-four eyes of 37 subjects (7-65 years old) with refractive errors less than 1.0 diopter, no history ...
Arzu Seyhan Karatepe +2 more
doaj +1 more source
Impaired perception of biological motion in Parkinson’s disease [PDF]
, 2016 OBJECTIVE: We examined biological motion perception in Parkinson’s disease (PD). Biological motion perception is related to one’s own motor function and depends on the integrity of brain areas affected in PD, including posterior superior temporal sulcus.
Cronin-Golomb, Alice +3 more
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Mesopic radial frequency contrast sensitivity function for young and older adults
Brazilian Journal of Medical and Biological Research, 2006 The objective of the present study was to determine contrast sensitivity curves of concentric circular patterns with radial frequencies of 0.25, 0.5, 1.0, 2.0, and 4.0 cycles per degree in young and older adult volunteers.
N.A. Santos +3 more
doaj +1 more source
Age-related deterioration of rod vision in mice [PDF]
, 2010 Even in healthy individuals, aging leads to deterioration in visual acuity, contrast sensitivity, visual field, and dark adaptation. Little is known about the neural mechanisms that drive the age-related changes of the retina and, more specifically ...
Crouch, Rosalie K +3 more
core +2 more sources