Fig. 11. Arcuate and nasal step defects. A. Goldmann kinetic perimetry. B. Right optic nerve with inferior notch. C. The corresponding full threshold visual field of the right eye with superior defect. D. Left optic nerve of the same patient with intact neural rim with inferior disc hemorrhage and early nerve fiber layer defect. E. The corresponding full threshold field did not pick up the early defect in the left eye. F. Frequency doubling technology field testing. Superior defect detected in the right eye. The early nerve fiber layer defect was not detected in the left eye.