Results 241 to 250 of about 88,097 (293)
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Pattern dystrophies of the retinal pigment epithelium
Acta Ophthalmologica, 1996ABSTRACT Pattern dystrophies of the retinal pigment epithelium are infrequent fundus abnormalities arranged in various patterns of dots, lines and branches. The basic lesion appears to be yellow deposits of abnormal lipofuscin accumulated within degenerated retinal pigment epithelium cells.
S Daniele, Angelo Carbonara
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Pattern Dystrophy of the Retinal Pigment Epithelium
Ophthalmology, 1982The pattern dystrophies are a group of hereditary macular dystrophies characterized by lesions of the retinal pigment epithelium (RPE) arranged in various patterns of dots, lines, and branched figures. This report of two pedigrees expands the clinical spectrum.
Robert C Watzke +2 more
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Pattern dystrophy of the retinal pigment epithelium
International Ophthalmology, 1987We describe six related patients presenting with an autosomal dominantly inherited pattern dystrophy of the retinal pigment epithelium, significantly abnormal electro-oculogram and minor colour vision abnormalities. There is a continuum of variable phenotypic expression within the pattern dystrophies of the retinal pigment epithelium.
A Pinckers +2 more
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Modeling flower pigmentation patterns
ACM Transactions on Graphics, 2021Although many simulation models of natural phenomena have been developed to date, little attention was given to a major contributor to the beauty of nature: the colorful patterns of flowers. We survey typical patterns and propose methods for simulating them inspired by the current understanding of the biology of floral patterning.
Lee Ringham +4 more
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Pigment Patterning in Teleosts
2021Pigment patterns in adult fish show astonishing diversity, reflecting their likely roles in camouflage, kin- and mate-selection, and display. Adult pigment pattern formation has only been explored extensively in the zebrafish, Danio rerio, and here we summarize the experimental studies that help to define a myriad of cell–cell interactions that result ...
Jennifer Owen +2 more
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Pattern Dystrophy of the Pigment Epithelium
American Journal of Ophthalmology, 1977Three generations of a family showed alterations in the retinal pigment epithelium along with mild visual disturbance. Younger members had granular pigment dispersed beneath the fovea while older members showed a reticular pigment pattern. The electro-oculogram was subnormal in most affected individuals, but visual fields, color vision, dark adaptation,
M F, Marmor, B, Byers
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Pigmentation pattern formation on snakes
Journal of Theoretical Biology, 1991We consider a cell-chemotaxis model mechanism for generating some of the common, simple and complex, patterns found on the skin of snakes. By investigating the pattern generation potential of the model we show that many of the more complex patterns might result from growth of the integument during the pattern formation process.
J D, Murray, M R, Myerscough
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Computer simulation of a Mulluscan pigmentation pattern
Journal of Theoretical Biology, 1969The formal characteristics of a colour pattern of complex appearance on a molluscan shell were studied by developing a computer program which produces an acceptable simulation of it. The pattern clearly involves a random factor determining points of initiation of diverging lines of pigment.
C H, Waddington, R J, Cowe
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Patterned Pigmentation in Children
Pediatric Clinics of North America, 2010The terms pigmentary mosaicism or patterned dyspigmentation describe a spectrum of clinical findings that range from localized areas of dyspigmentation with no systemic findings to widespread dyspigmentation with associated neurologic, musculoskeletal, and cardiac abnormalities, and other sequelae that can lead to early demise. Given this wide spectrum,
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