Figure 1c:

Procedure for flattening the retina. MR images (26/4.3) show steps as follows: (a) Coronal oblique image. From a central section (outlined in red), the retinal edge (white curve) is found. The 3D images are resectioned at the locations indicated by the blue lines. (b) Three-dimensional oblique view of the resectioning. The 3D retinal surface is shown in green. A single section of the resectioned data is shown (outlined in blue). (c) Oblique image is from same section as a. The resectioned data (green curve) indicate the retinal surface. From each section, profiles perpendicular to the retinal surface are found (purple lines). (d) Spatially warped image is from same section as a. The profiles produce a linearized representation of the retina (outlined in purple) from each section, resulting in a 3D flattened image of the retina.