Supplementary Material for: Submacular and Intraretinal Fluid Associated with Arteritic Anterior Ischemic Optic Neuropathy

Abstract:
Introduction: Anterior ischemic optic neuropathy (AION) is an ischemic disorder of the optic nerve and a common cause of acute, painless, permanent vision loss. It is divided into two types: arteritic anterior ischemic optic neuropathy (AAION) and non-arteritic anterior ischemic optic neuropathy (NAION). Although subretinal fluid associated with optic disc edema has been reported in cases of NAION, it is rarely described in AAION.

Case Presentation: An 86-year-old female with a history of polymyalgia rheumatica presented with sudden vision loss in the left eye. Initial examination revealed left pallid optic disc edema with peripapillary hemorrhages. OCT of the left macula showed intraretinal and submacular fluid. The patient was started on 50mg of oral Prednisone daily. The diagnosis of Giant Cell Arteritis (GCA) was later confirmed with a positive temporal artery biopsy. Three weeks after presentation, an OCT was completed which demonstrated complete resolution of the intraretinal and submacular fluid. Although the presence of both intraretinal and subretinal fluid has been previously documented in cases of NAION, it is rarely reported in a patient with GCA.

Conclusion: This is a newly described case of subretinal and intraretinal fluid in a patient with arteritic anterior ischemic optic neuropathy. We postulate that the pathophysiology behind this is mediated by associated choroidal ischemia leading to altered permeability. OCT is an important imaging modality allowing for signs of GCA to be better characterized.