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RETINAL VASCULAR LOOP

Originally posted on @retina.rocks 08/04/2020

This patient has benign bilateral congenital prepapillary vascular loops. These can be either unilateral or bilateral.

Learning Points:
Although usually just an incidental finding, they can rarely cause a branch retinal 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.