Spatial Correspondence of Visual Field Defect with OCTA Result in Non-Arteritic Anterior Ischemic Optic Neuropathy: A Case Series

Purpose: To describe the spatial correspondence of hypoperfusion detected using optical coherence tomography angiography (OCTA) with visual field defects, which portrays the link between hypoperfusion and decreased visual function in the eyes with nonarteritic anterior ischemic optic neuropathy(NAION). Case Description: This case series included ten eyes with NAION that portrayed the spatial correspondence between reduced perfusion measured by OCTA and visual field defects. The reduced perfusion area found by OCTA matched well with the corresponding area with structural changes. This correlation shows the connection between structural and functional damage in NAION. Conclusion: This case series shows that OCTA is a useful modality for assessing perfusion to the optic nerve head in eyes with NAION; moreover, it can also be used to monitor disease progression in patients with NAION.