2086 Occlusion Rates of Ophthalmic Segment Aneurysms With Flow-Diverters

INTRODUCTION: Flow diversion is an established treatment modality for wide necked ophthalmic segment aneurysms. However, a comparison of efficacy rates with flow diversion of aneurysms that share a common neck with the ophthalmic artery versus aneurysms with necks that are distinct from the ophthalmic artery has not been performed. METHODS: Patients with ophthalmic segment aneurysms who received endovascular treatment using flow diverters between 2009-2023 at Washington University School of Medicine were retrospectively analyzed, with the primary endpoint of assessing a difference in occlusion rates between aneurysms which share a common origin with the ophthalmic artery compared to aneurysms with a separate origin, using the Raymond-Roy classification system. Patients received follow-up angiograms at 6 months and 18 months time points. RESULTS: Of the 228 patients that underwent treatment, 34 patients (14.9%) were males and 194 (85.1% were females). Mean patient age was 54.69 ± 14.71. 23 patients (10.08%) patients presented with complaints of blurry vision. 42.98% patients had at least one ophthalmic aneurysm, 46.4% patients had at least one paraophthalmic aneurysm, and 10.08% patients had both types of aneurysms. 23 (10.08%) patients had aneurysms where the neck was shared with the origin of the ophthalmic artery. Fisher’s exact test revealed a statistically significant difference (p=0.0024) in the rates of aneurysm occlusion when the aneurysm shared its origin with the ophthalmic artery. CONCLUSIONS: Rates of aneurysm occlusion using flow diverters are impacted when ophthalmic aneurysms share a common origin with the ophthalmic artery.