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Venn diagram summarizing results of fluorescein angiograms performed for 34 patients. There were 28 patients with perfusion abnormalities. Large occluded vessels and intravascular abnormalities only occurred in the presence of capillary nonperfusion (CNP). There were 6 patients with no vascular abnormalities, and 2 patients with fluorescein leakage alone. The number in parentheses is the number with fluorescein leakage in each group.
