A 56-year-old man presented with a pigmented iris nodule which showed
prominent vessels and enlargement within 6 weeks. The tumour caused re
current hyphemata. Differential diagnosis included a pigmented iris he
mangioma and a malignant melanoma, A sectoriridectomy was performed. H
istology revealed a stromal cavity filled with fibrin and abundant ery
throcytes, A diagnosis of an iris varix was established. However, it h
as to be pointed out that the distinction between a varix of the iris
and an iris hemangioma may be difficult not only clinically but also h
istologically, and that iris melanomas may produce hemangioma-like pat
terns.