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8 de nov. de 2019 · Macular dystrophies (MDs) are a group of inherited retinal disorders that cause significant visual loss, most often as a result of progressive macular atrophy. They are characterised by bilateral, relatively symmetrical macular abnormalities that significantly impair central visual function. 1 While the fundus findings may be predominantly ...
Results: The frequency of a fragmented FAZ was 4.8% of individuals (12 of 250) or 3.6% of eyes (18 of 500 eyes). A significant difference was found between the control eyes and eyes with fragmented FAZs for foveal pit depth, pit area, and total PICA (P < 0.001, P = 0.002, and P < 0.001, respectively). The presence of a fragmented FAZ did not ...
17 de jun. de 2020 · Discussion. We used high-throughput single-cell RNA-seq to generate a cell atlas of the adult human retina. From 55,736 foveal and 29,246 peripheral retinal cells, we identified 58 cell types. We then used the cell atlas to compare fovea with peripheral retina, and human with macaque retinal cell types.
Ischemia of outer retina and RPE from occlusion of choriocapillaris. Clinical findings: well-demarcated, flat, pale lesions in peripheral retina near ora serrata. Histopathology: atrophy of outer retina and RPE, inner nuclear layer adherent to Bruch membrane, sharp boundary between normal and abnormal retina.
A LMH is commonly confused with ERM foveoschisis. On SD-OCT, LMH is an irregular foveal contour, with a foveal cavity having undermined edges, and there is the presence of at least one other sign evoking loss of foveal tissue (Figure 4B). 77 LMH may be associated with EP, foveal bump or ellipsoid line disruption. Foveoschisis
15 de fev. de 2024 · In clinical practice, histopathology refers to the examination of tissues obtained by biopsy or the surgical removal of an organ. It is a form of anatomical pathology that looks specifically at tissues and organs as opposed to clinical pathology which looks at bodily fluids. Histopathology is performed by a lab-based pathologist who, with the ...
Among various bird groups, the foveal pit may have two depths, shallow (80-120 µm) or deep (190-240 µm). There is a long-lasting debate whether the bird fovea acts as a local image enlarger or as a focus indicator and movement detector. These functions are supported by the refraction of the incoming light at the tissue surface.
