Figure 1: Angiograms showing the stages in the Onyx embolization of a 6.5 mm left ophthalmic artery aneurysm that was previously untreated. (a) Digital subtraction angiography (DSA) showing a 6.5 mm left ophthalmic artery aneurysm in the frontal and magnified frontal view (b). (c) Frontal projection of DSA showing “seal test” with Rebar 14 microcatheter in midportion of aneurysm with Hyperglide balloon inflated. (d) Initial injection of Onyx HD 500. (e) Frontal and lateral. (f) DSA projection displaying immediate 95% occlusion with neck remnant. (g) Nine-month followup showing progression to complete occlusion in the frontal and lateral projections (h).