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Abstract #112416 Published in IGR 24-3
Parapapillary choroidal microvasculature dropout in eyes with primary open-angle glaucoma
Igarashi R; Ochiai S; Akagi T; Miyamoto D; Sakaue Y; Iikawa R; Fukuchi TScientific reports 2023; 13: 20601
The purpose of this study was to evaluate how various parameters are related to microvasculature dropout (MvD) area measured using optical coherence tomography angiography (OCTA). We measured the area of MvD in 55 patients with primary open-angle glaucoma (POAG). Using OCTA, MvD area and peripapillary choroidal atrophy (PPA) area were assessed in a 4.5 mm × 4.5 mm region. The following were examined: circumpapillary nerve fiber layer (cpRNFL) thickness, optic disc area, optic disc cupping area, optic disc rim area, Humphrey Field Analyzer (HFA) 24/10-2 mean deviation (MD), and pattern standard deviation (PSD). The relationship between MvD area and each parameter was evaluated using Spearman's rank correlation coefficient analysis. Mean MvD area and PPA area were 0.18 ± 0.17 mm and 1.13 ± 0.72 mm, respectively. MvD area was significantly correlated with optic disc rim area (p = 0.0017), cpRNFL (p = 0.0027), HFA 24/10-2 MD, and PSD (p < 0.001). In eyes with POAG, MvD area indicates the severity of glaucoma, which might be associated with structural changes in the peripapillary vasculature around the optic disc.
Department of Ophthalmology and Visual Science, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachido-ri, Chuo-ku, Niigata, 951-8510, Japan. iryoko@med.niigata-u.ac.jp.
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