Figure 1 (A) Gray-scale image of 30° central visual field observed by Humphrey perimetry from a NAION patient, showing a superior fan-shaped defect connected to the optic disc. (B) Correction map of the visual field of the same patient, showing a superior fan-shaped defect connected to the optic disc. (C) Macular micro-visual field changes corresponding to the visual field defect shown in (A). The microMS value was 7.1 dB. P1 and P2 were 94% and 100%, respectively. Fixation was relatively stable. (D) Fixed view of microperimetry. P1=41% and P2=80%.