Results 21 to 30 of about 8,879 (266)
The bisretinoids of retinal pigment epithelium [PDF]
Progress in Retinal and Eye Research, 2012 The retina exhibits an inherent autofluorescence that is imaged ophthalmoscopically as fundus autofluorescence. In clinical settings, fundus autofluorescence examination aids in the diagnosis and follow-up of many retinal disorders. Fundus autofluorescence originates from the complex mixture of bisretinoid fluorophores that are amassed by retinal ...
Janet R, Sparrow +6 more
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The effects of dietary carotenoid supplementation and retinal carotenoid accumulation on vision-mediated foraging in the house finch. [PDF]
PLoS ONE, 2011 BACKGROUND: For many bird species, vision is the primary sensory modality used to locate and assess food items. The health and spectral sensitivities of the avian visual system are influenced by diet-derived carotenoid pigments that accumulate in the ...
Matthew B Toomey, Kevin J McGraw
doaj +1 more source
Visual adaptation of opsin genes to the aquatic environment in sea snakes
BMC Evolutionary Biology, 2020 Background Evolutionary transitions from terrestrial to aquatic life history cause drastic changes in sensory systems. Indeed, the drastic changes in vision have been reported in many aquatic amniotes, convergently.
Takashi Seiko +8 more
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Retinal Pigment Epithelium Tear [PDF]
Current Ophthalmology Reports, 2014 Retinal pigment epithelium tear is a potentially vision threatening complication of retinal pigment epithelial detachment associated with neovascular age-related macular degeneration. Retinal pigment epithelium tear has been reported to occur spontaneously and after treatment with anti-vascular growth endothelial factor agents.
Aleksandra V, Rachitskaya +1 more
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Accelerated evolution of dim-light vision-related arrestin in deep-diving amniotes
Frontiers in Ecology and Evolution, 2022 Arrestins are key molecules involved in the signaling of light-sensation initiated by visual pigments in retinal photoreceptor cells. Vertebrate photoreceptor cells have two types of arrestins, rod arrestin, which is encoded by SAG and is expressed in ...
Xin Guo +3 more
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A new mouse model for retinal degeneration due to Fam161a deficiency
Scientific Reports, 2021 FAM161A mutations are the most common cause of inherited retinal degenerations in Israel. We generated a knockout (KO) mouse model, Fam161a tm1b/tm1b , lacking the major exon #3 which was replaced by a construct that include LacZ under the expression of ...
Avigail Beryozkin +7 more
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Structure and Conformation of the Carotenoids in Human Retinal Macular Pigment. [PDF]
PLoS ONE, 2015 Human retinal macular pigment (MP) is formed by the carotenoids lutein and zeaxanthin (including the isomer meso-zeaxanthin). MP has several functions in improving visual performance and protecting against the damaging effects of light, and MP levels are
Ana-Andreea Arteni +7 more
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Vitamin A deficiency affects gene expression in the Drosophila melanogaster head
G3: Genes, Genomes, Genetics, 2021 Insufficient dietary intake of vitamin A causes various human diseases. For instance, chronic vitamin A deprivation causes blindness, slow growth, impaired immunity, and an increased risk of mortality in children.
Deepshe Dewett +4 more
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Probing how initial retinal configuration controls photochemical dynamics in retinal proteins
EPJ Web of Conferences, 2013 The effects of the initial retinal configuration and the active isomerization coordinate on the photochemistry of retinal proteins (RPs) are assessed by comparing photochemical dynamics of two stable retinal ground state configurations (all-trans,15-anti
Sheves M. +6 more
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Diagnosis of Retinitis Pigmentosa from Retinal Images [PDF]
International Journal of Electronics and Telecommunications, 2019 Retinitis pigmentosa is a genetic disorder that results in nyctalopia and its progression leads to complete loss of vision. The analysis and the study of retinal images are necessary, so as to help ophthalmologist in early detection of the retinitis ...
Giritharan Ravichandran +2 more
doaj +1 more source