Fig. 3From: Optical coherence tomography angiography using the black-and-white pixel binarization histogram software: a new technique for evaluating healing of macular holes in two surgical techniquesThe central 1.5-mm-diameter circle (left) and the 0.5-mm-diameter circle (right). The former has 20,108 pixels (17,402 black pixels and 2706 white pixels). The latter has 2217 pixels (2036 black pixels and 181 white pixels)Back to article page