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Há 3 dias · Purpose To evaluate the reflectivities of the retinal pigment epithelium (RPE), ellipsoid zone (EZ), and external limiting membrane (ELM) in the central fovea, perifoveal, and parafoveal regions with Optical Coherence Tomography (OCT) and the change in choroid vascular index (CVI) in patients using hydroxychloroquine (HCQ). Methods Sixty-one patients underwent HCQ treatment; age and sex ...
Há 3 dias · Citation 4 As the distribution of cones changes rapidly moving away from the fovea, retinal morphology affects light scattering patterns significantly. Citation 5 Mitochondria and lysosomes are identified as the organelles that scatter the most light in the cell, and their optical properties, particularly scattering coefficients, are associated with their structural integrity and functional ...
Há 5 dias · For most RP participants, average population-RMS amplitudes were far lower than our control population, with two notable exceptions: 1.5° in 64010 and 2° and 5° in 89385. 64010 has a less severe RP phenotype, and cones close to her fovea have markedly preserved structure and function, though amplitude still declines with eccentricity.
Rhinosporidiosis is a chronic granulamotous disease caused by Rhinosporidium seeberi (R. seeberi), a pathogen currently considered a fungus-like parasite of the eukaryotic group mesomycetozoea.
Há 5 dias · Genetics. Gene: PRPH2 (6p21.2) OMIM No.: #179605 Inheritance Pattern: Autosomal dominant; Effect: Mutations in PRPH2, which encodes peripherin-2, a structural protein in photoreceptor cells, are associated with a wide range of phenotypes including pattern dystrophy, central areolar choroidal dystrophy, cone-rod dystrophy, and rod-cone dystrophy.
Há 5 dias · The study group saw about 30% of eyes with a ‘subnormal’ fovea and lower prevalence of foveal hypoplasia (35%) than another study. These images of study participants show a wide range of physiological feature of optic nerve hypoplasia: (a) cup below RPE, (b) cup below IRL, (c) cup above IRL, (d) no cup and (e) peak formation.
Há 5 dias · Describe the overall relationship between retinal vascular parameters and foveal avascular zone (FAZ) architecture and age in normal healthy eyes over a wide age range, according to a cross-sectional study using swept source optical coherence tomography angiography (SS OCTA)
