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  Indian J Med Microbiol
 

Figure 2: A subfoveal area of 1.5 mm width (yellow), delineated by upper border at rated perceived exertion and lower border at the choroid-scleral interface, is used to calculate the total circumscribed choroidal area, luminal (dark pixels) area, and the stromal (white pixels) area. Choroidal vascularity index is calculated as the proportion of luminal (dark pixels) area to the total circumscribed choroidal area, expressed in percentage

Figure 2: A subfoveal area of 1.5 mm width (yellow), delineated by upper border at rated perceived exertion and lower border at the choroid-scleral interface, is used to calculate the total circumscribed choroidal area, luminal (dark pixels) area, and the stromal (white pixels) area. Choroidal vascularity index is calculated as the proportion of luminal (dark pixels) area to the total circumscribed choroidal area, expressed in percentage