Figure 2

Topological representations of the posterior pole. Vertical and horizontal raster spectral domain optical coherence tomography line scans show that the long axis of the elliptical dome lies in the horizontal meridian, as demonstrated also by a quad-mesh projection onto an elevation-mapped near-infrared image plane. The region of atrophy lies at the inferior border of the crest of the elliptical dome, where the choroid is thinnest.