Figure 1
From: The implications of subretinal fluid in pachychoroid neovasculopathy
Measurements of choroidal thickness, DLS height, location of pachyvessel, CNV area, and CNV district. (A) DLS height (α) was defined as the highest among the raster scan of OCT (from Bruch membrane to outer border of the RPE layer). Subfoveal choroidal thickness (β) was the mean distance measured just below the fovea in the horizontal and vertical scans of OCT across the foveal center (from the Bruch membrane to sclerochoroidal junction). And, pachyvessel contour (white line) with attenuation of the choriocapillaris (white arrow) is seen below the DLS. (B) We obtained an en face image of OCTA that includes the CNV complex to the maximum extent possible. (C) ANGIOTOOL software was used to measure the extent of CNV district (the line surrounding the outer border of the entire CNV) and the area of CNV (the line surrounding the CNV). OCT, optical coherence tomography; OCTA, optical coherence tomography angiography; PNV, pachychoroid neovasculopathy; DLS, double-layer sign; CNV, choroidal neovascularization; RPE, retinal pigment epithelium.
