Fig. 7. Normal left temporal angiogram of the same 33-year-old man as in Figure 6 eight seconds later. The episcleral circulation is being filled from a perforating vessel near the limbus derived from the deep circle. These eventually anastomose with vessels posteriorly and above. The conjunctival circulation is also late in filling. The main trunk of the artery can no longer be distinguished because of superficial leakage of dye.