Dimensions of the Optic Nerve Head Neural Canal Using Enhanced Depth Imaging Optical Coherence Tomography in Non-Arteritic Ischemic Optic Neuropathy Compared to Normal Subjects

An anatomically crowded scleral canal has been linked to the development of non-arteritic anterior ischemic optic neuropathy (NAION). Previous authors have described the superficial characteristics of a "disc at risk" in NAION. We sought to investigate the deeper structures of the optic nerve head neural canal using enhanced depth imaging optical coherence tomography (EDI OCT) in NAION patients