Figure.

Example of 6 × 6-mm, macula-centered choriocapillaris angiogram from eye with intermediate AMD (original, left) after binarization with the Phansalkar local method, radius 15 pixels (center), versus the Otsu global method (right). Per the analysis in our study investigating the relationship between dry AMD stage and CC flow deficit metrics, each image previously underwent compensation for signal attenuation beneath drusen. Flow is shown in white, and regions of analysis corresponding to those in Tables 2 and 3 are shown by the blue overlay.