A Case of Acute Zonal Occult Outer Retinopathy which was Initially Diagnosed as Retrobulbar Optic Neuritis

Abstract

Acute zonal occult outer retinopathy (AZOOR) is a disease characterized by visual impairment without prominent fundus findings at the beginning. Therefore, AZOOR can be initially diagnosed as retrobulbar optic neuritis (ON), which causes unilateral visual impairment in a young patient. In this report, a case of AZOOR initially diagnosed as retrobulbar ON is presented with multimodal imaging findings. The aim of this report is to emphasize that AZOOR is a clinical condition that should be kept in mind in the differential diagnosis of retrobulbar ON. Although its clinical diagnosis is difficult, optic coherence tomography and electroretinography findings are very useful in diagnosing.