biostudies-literatureHwang BEthe Basic Science Research Program through the National Research Foundation of Koreae0277988https://www.ebi.ac.uk/biostudies/studies/S-EPMC9674129biostudies-literatureUnknown17(11)<h4>Purpose</h4>To evaluate the choriocapillaris (CC) flow changes in branched retinal vascular obstruction (BRVO) on optical coherence tomography angiography (OCTA).<h4>Methods</h4>Retrospective analysis of 29 patients with unilateral BRVO (58 eyes, including unaffected fellow eyes for controls). 4.5 x 4.5 mm macular scans were divided into 4 quadrants. Serial analyses were conducted on CC flow voids of the opposite quadrant to the active occluded area in BRVO eyes. Each of the quadrants were also compared to the occluded quadrant of resolved eyes and the contralateral quadrant of fellow eyes by matched data analysis. A regression analysis was performed on the several parameters (Choroidal thickness; CT, Choroidal vascularity index; CVI, Central macular thickness; CMT, The number of intraPloS oneSerial choriocapillaris flow changes in eyes with branched retinal vascular obstruction (BRVO).PMC9674129NRF-2020R1F1A1074898Kwak JHPark YGHwang BEKim JYPark YHKim RYKim MfalseSerial choriocapillaris flow changes in eyes with branched retinal vascular obstruction (BRVO).<h4>Purpose</h4>To evaluate the choriocapillaris (CC) flow changes in branched retinal vascular obstruction (BRVO) on optical coherence tomography angiography (OCTA).<h4>Methods</h4>Retrospective analysis of 29 patients with unilateral BRVO (58 eyes, including unaffected fellow eyes for controls). 4.5 x 4.5 mm macular scans were divided into 4 quadrants. Serial analyses were conducted on CC flow voids of the opposite quadrant to the active occluded area in BRVO eyes. Each of the quadrants were also compared to the occluded quadrant of resolved eyes and the contralateral quadrant of fellow eyes by matched data analysis. A regression analysis was performed on the several parameters (Choroidal thickness; CT, Choroidal vascularity index; CVI, Central macular thickness; CMT, The number of intra2022-01-01T00:00:00Z20222025-04-05T15:21:22.506Z2025-04-05T15:21:22.506ZS-EPMC96741293639945510.1371/journal.pone.0277988