Results 21 to 30 of about 302,396 (290)
Relationship between Visual Dysfunction and Retinal Changes in Patients with Multiple Sclerosis. [PDF]
PLoS ONE, 2016 To evaluate structural changes in the retina and their correlation with visual dysfunction in patients with multiple sclerosis.Patients with multiple sclerosis (n = 84) and healthy controls (n = 84) underwent structural evaluation of the retinal nerve ...
Maria Satue +10 more
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Clinical Ophthalmology, 2022 Marcus Werner Storch,1 Greta Zinser,1 Peer Lauermann,1 Mohammed Haitham Khattab,1 Anna Nguyen-Höhl,1 Dirk Raddatz,2 Katja Gollisch,2 Josep Callizo,1 Hans Hoerauf,1 Nicolas Feltgen1 1Department of Ophthalmology, University of Göttingen, Göttingen ...
Storch MW +9 more
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Psychophysical aspects of contrast sensitivity
African Vision and Eye Health, 2013 This paper reviews the psychophysical aspects of contrast sensitivity which concerns components of visual stimuli and the behavioural responses and methods used in contrast sensitivity testing.
Anusha Y. Sukha, Alan Rubin
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Achromatic Cues Are Important for Flower Visibility to Hawkmoths and Other Insects
Frontiers in Ecology and Evolution, 2022 Studies on animal colour vision typically focus on the chromatic aspect of colour, which is related to the spectral distribution, and disregard the achromatic aspect, which is related to the intensity (“brightness”) of a stimulus.
Casper J. van der Kooi, Almut Kelber
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Psicologia: Reflexão e Crítica, 2016 The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period.
Éllen Dias Nicácio da Cruz +4 more
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Crowdsourcing visual perception experiments: a case of contrast threshold [PDF]
PeerJ, 2019 Crowdsourcing has commonly been used for psychological research but not for studies on sensory perception. A reason is that in online experiments, one cannot ensure that the rigorous settings required for the experimental environment are replicated.
Kyoshiro Sasaki, Yuki Yamada
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Journal of Eye Movement Research, 2017 Low vision therapy, such as magnifiers or contrast enhancement, is widely used. Scientific evidence proving its efficacy is scarce however. The objective of this study was to investigate whether the benefits of magnification and contrast enhancement ...
Michael Christen, Mathias Abegg
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Spatiotemporal contrast sensitivity of early vision [PDF]
Vision Research, 1993 Based on the spatial and temporal statistics of natural images, a theory is developed that specifies spatiotemporal filters that maximize the flow of information through noisy channels of limited dynamic range. Sensitivities resulting from these spatiotemporal filters are very similar to the human spatiotemporal contrast sensitivity, including the ...
openaire +3 more sources
Perception of global image contrast involves transparent spatial filtering and the integration and suppression of local contrasts (not RMS contrast) [PDF]
Royal Society Open Science, 2017 When adjusting the contrast setting on a television set, we experience a perceptual change in the global image contrast. But how is that statistic computed?
Tim S. Meese +2 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
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