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Visual field defects in NA-AION, plotted with Goldmann perimeter (using I-2e, I-4e and V-4e targets). (a) Inferior altitudinal defect with I-2e and inferior nasal defect with I-4e and V-4e; (b) absolute inferior altitudinal defect with I-2e, I-4e and V-4e. The visual acuity in both eyes was 20/20[39]
