Clinical Characteristics of Methanol-Induced Optic Neuropathy: Correlation between Aetiology and Clinical Findings

Figure 2

MRI identified characteristic central hyperintense T2 signals in patients with methanol-induced optic neuropathy. (a) Coronal T2 image of patient 3, demonstrating hyperintense signals (arrows) in both orbital optic nerves as “target sign.” (b) Axial T2 image of patient 6, demonstrating hyperintense signals (arrows) in both orbital optic nerves as “neutral axis sign.” (c) (i, ii) Coronal T2 image of patient 4, demonstrating hyperintense signals in both cranial optic nerves as “mask sign” (iii).