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A, E, I: Optic disc-centred 4.50×4.50 mm2 OCT angiograms; B, F, J: Selected optic disc OCT angiograms; C, G, K: Optic disc non-perfusion areas; D, H, L: Optic disc areas (except major branch retinal blood vessels). A-D: In the eyes of a normal subject; E-H: NAION eye; I-L: Contralateral eye of a NAION patient. The non-perfusion areas are marked in red (C, D, G, H, K, L).
