This healthy 32YO female was referred for possible asymptomatic disc neovascularization. Vision was 20/20 OU. Fundus photography shows bilateral vascular loops that do not leak angiographically.
Learning Points:
A retinal vascular loop is a benign congenital anomaly that presents as an elevated and twisted bundle of vessels projecting from the disc into the vitreous cavity. Is it usually unilateral and arterial. Although usually just an incidental finding, these can rarely cause a branch arterial or venous occlusion (see Retinal Cases Brief Rep 2014;8;124-126 and Ophthalmology 2020;127;124-126). They should also not be confused with disc neovascularization, which consists of much smaller caliber vessels that leak on fluorescein angiography.
