Results 41 to 50 of about 310,218 (192)
Visual Function is Gradually Restored During Retina Regeneration in Adult Zebrafish
Frontiers in Cell and Developmental Biology, 2022 In comparison to mammals, zebrafish are able to regenerate many organs and tissues, including the central nervous system (CNS). Within the CNS-derived neural retina, light lesions result in a loss of photoreceptors and the subsequent activation of Müller
Juliane Hammer +8 more
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Revista Brasileira de OftalmologiaRESUMO Objetivo: Comparar a sensibilidade ao contraste nas faixas etárias de 20 a 25, 40 a 45 e acima de 60 anos de idade. Métodos: Realizou-se um estudo transversal com indivíduos de diferentes idades, com acuidade visual superior a 20/25, sem doença ...
Reinaldo de Oliveira Sieiro +5 more
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Visual acuity and contrast sensitivity are two important factors affecting vision-related quality of life in advanced age-related macular degeneration. [PDF]
PLoS ONE, 2018 Vision loss from age-related macular degeneration (AMD) has a profound effect on vision-related quality of life (VRQoL). The pupose of this study is to identify clinical factors associated with VRQoL using the Rasch- calibrated NEI VFQ-25 scales in ...
Miin Roh +4 more
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Scientific Reports, 2014 While contrast normalization is well known to occur in luminance vision between overlaid achromatic contrasts, and in colour vision between overlaid colour contrasts, it is unknown whether it transfers between colour and luminance contrast. Here we investigate whether contrast detection in colour vision can be normalized by achromatic contrast, or ...
Mina Gheiratmand +2 more
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Understanding physiological and degenerative natural vision mechanisms to define contrast and contour operators. [PDF]
PLoS ONE, 2009 BACKGROUND:Dynamical systems like neural networks based on lateral inhibition have a large field of applications in image processing, robotics and morphogenesis modeling.
Jacques Demongeot +3 more
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Dynamics of contrast adaptation in central and peripheral vision
Journal of Vision, 2018 Adaptation aftereffects are generally stronger for peripheral than for foveal viewing. We examined whether there are also differences in the dynamics of visual adaptation in central and peripheral vision. We tracked the time course of contrast adaptation to binocularly presented Gabor patterns in both the central visual field (within 5°) and in the ...
Gao, Yi +2 more
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The effect of tinted spectacle lenses on contrast sensitivity and colour vision
African Vision and Eye Health, 2013 Aim: Spectacle wearers often prefer tintedlenses to clear or non-tinted lenses for their protection against harmful radiation, improved cos- mesis, enhancement of visual performance and effects on colour vision.
M. Shaik +6 more
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Postoperative vision-related quality of life in macula-off rhegmatogenous retinal detachment patients and its relation to visual function. [PDF]
PLoS ONE, 2014 To determine the vision-related quality of life (VR-QOL) after surgery for macula-off rhegmatogenous retinal detachment (RRD) in relation to visual acuity, contrast acuity, and color vision.In a prospective observational study, we included 55 patients ...
Mathijs A J van de Put +5 more
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Comparison of two devices to simulate vision with intraocular lenses
Clinical Ophthalmology, 2019 Siegfried Wahl,1,2 Chengyang Song,1 Arne Ohlendorf1,2 1Institute for Ophthalmic Research, Eberhard Karls University Tuebingen, Tuebingen, Baden-Wuerttemberg, Germany; 2Technology and Innovation, Carl Zeiss Vision International GmbH, Aalen, Baden ...
Wahl S, Song C, Ohlendorf A
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Vernier and contrast discrimination in central and peripheral vision
Vision Research, 2000 The present paper asks whether Vernier offset discrimination is limited by the observer's sensitivity to local contrast change in both central and peripheral vision. To answer this question we compared Vernier discrimination and contrast discrimination thresholds (specified in the same units) for a pair of narrow ribbons of cosine gratings. Because the
Stanley A. Klein +2 more
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