The iris AV malformation was classified as simple in 5 cases (cases 1, 2, 8, 9, and 10) and complex in the other 9 cases (Figure 1). All iris vessels appeared to originate in the anterior chamber angle, but it was not possible to determine whether they were continuous with the epibulbar vessels that were present in the quadrant of the iris lesion in 7 cases (cases 1, 4, 5, 7, 12, 13, and 14). In 11 cases, the AV malformation was near the pupillary margin, and in 3 cases, it was in the midzone of the iris (cases 1, 2, and 4). The iris was blue in 9 cases, brown in 3, and green in 2. Representative photographs and fluorescein angiograms of the iris lesions are shown in Figures 2, 3, 4, 5, and 6. Even in patients with blue irides, the vascular lesion was not fully visualized because it was partly obscured by the iris stroma. However, the lesions were clearly visualized with fluorescein angiography (Figures 2, 3, 4, 5, and 6).