Fundus images of a patient with IRVAN syndrome. (a) Color image showing retinal exudates at the posterior pole involving the macula together with optic disc swelling and hyperemia. (b) Multiple pigmented chorioretinal lesions at the midperiphery (arrow head) together with evidence of vascular sheathing (arrow). (c) Fundus fluorescein angiography showing dye leakage at the optic disc. (d) Wide area of retinal nonperfusion.
