Figure 3 | Scientific Reports

Figure 3

From: A randomized clinical trial evaluating choroidal blood flow and morphology after conventional and pattern scan laser panretinal photocoagulation

Figure 3

Representative binarized image of the choroidal area in an enhanced depth imaging (EDI) optical coherence tomographic (OCT) image (A). The area of interest of the choroid is outlined (top). The EDI-OCT image is converted to a binary image using the ImageJ software. The rectangle surrounded by the red line was excised, and the dark areas were traced by the modified Niblack method (middle). The binarized image and the margin of the traced area were merged which demonstrates that the traced area is consistent with the dark areas of the choroidal areas of the OCT image (bottom). The ratio of the choroidal area (B) the luminal area (C) and the stromal area (D) to the baseline was not significantly different between the conventional laser and the PASCAL groups. ***P < 0.001, **P < 0.01, *P < 0.05.

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