1. Altered Macular Microvasculature in Mild Cognitive Impairment and Alzheimer Disease

    Altered Macular Microvasculature in Mild Cognitive Impairment and Alzheimer Disease

    Background: The goal of the present study was to analyze the macular microvacular network in mild cognitive impirment (MCI) and Alzheimer disease (AD). Methods: Twelve patients with AD and 19 patients with MCI were recruited together with 21 cognitively normal controls with a similar range of ages. Optical coherence tomography angiography was used to image the retinal microvascular network at the macular region, including retinal vascular network (RVN), superficial vascular plexus (SVP), and deep vascular plexus (DVP). Fractal analysis (box counting, D box ) representing the microvascular density was performed in different annular zones and quadrantal sectors. The macular ganglion cell ...

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