Pattern of Vascular Nonperfusion in Retinal Venous Occlusions Occurring Within the Optic Nerve With and Without Optic Nerve Head Swelling

Abstract

The RVOs occurring within the optic nerve can be subdivided into 2 distinct groups on the basis of ONHS. The presence of ONHS is associated with younger age, less severe vascular nonperfusion, and better VA. This is consistent with a retrocribrosal site of occlusion, which has access to the pial plexus that can provide collateral channels for retinal venous drainage.