Topographic Relationship with a Retinal Nerve Fiber Layer Defect Differs between β-Zone and γ-Zone Parapapillary Atrophy

Figure 5

Representative case showing the topographic relationship between the PMRE and the RNFL defect in an eye with γ-zone PPA. (a) Pseudocolor infrared fundus photograph showing the 24 radial B-scan lines. (b) Radial B-scan OCT image showing γ-zone PPA. White and red arrowheads indicate the optic disc margin and PPA margin, respectively. BM is lacking throughout the PPA bed. (c) The PMRE is seen near the 8.5-o’clock meridian (arrow). (d) The RNFL defect (arrows) is seen near the edge of PPA.