Fig. 4

Representative OCTA images at 100 μm beneath Bruch membrane (BM) in healthy and central serous chorioretinopathy (CSC) eyes. (Top left) OCTA image of the right eye of a 31-year-old healthy female whose subfoveal choroidal thickness (SCT) was 288 μm and axial length (AL) was 23.40 mm. (Top middle) The binarized OCTA image of the healthy eye. (Top right) B-scan of the healthy eye with the arc line showing the imaging depth. (Bottom left) OCTA image of the right eye of a 41-year-old CSC male whose SCT was 507 μm and AL was 23.05 mm. (Bottom middle) The binarized OCTA image of the CSC eye. (Bottom right) OCT B-scan of the CSC eye with dilated choroidal vessels and subretinal fluid. Based on the OCTA image at 100 μm beneath BM, the choroidal vascular density was 58.2 and 71.5% in the healthy eye and the CSC eye, respectively