Average retinal nerve fiber layer (RNFL) was thinner in patients with nonarteritic anterior ischemic optic neuropathy (NAION) compared with patients with optic neuritis (ON).
Why this matters
Different systemic risk factors and future implications between NAION and ON make the correct diagnosis important for patients’ health.
NAION and ON can both result in optic atrophy, and patients may present after acute vision loss has resolved.
This study lays the groundwork for future longitudinal studies assessing diagnostic markers to differentiate NAION from ON.