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

Figure 4

Representative case showing the topographic relationship between the PMRE and the RNFL defect in an eye with β-zone PPA. (a) Pseudocolor infrared fundus photograph showing the 24 radial B-scan lines. (b) Optical coherence tomography (OCT) image showing β-zone PPA. White and red arrowheads indicate the optic disc margin and PPA margin, respectively. Bruch’s membrane (BM) is seen throughout the PPA bed. (c) The PMRE is seen near the 6.5-o’clock meridian (arrow). (d) The RNFL defect (arrows) is seen near the PMRE.