Fiber structure and contours of structure parameters. Visualization of entire fibrous regions of the fiber model with scleral random (blue), scleral radial (orange), and scleral circumferential (green), pia (purple) and dura (red) fibers in anterior view, posterior view, a sectional and an isometric cut view along the nasal-temporal (N-T) direction (a). Maps of fiber dispersion (b), fiber volume fraction (c), and mean fiber orientation (c) for these fibrous regions in anterior, posterior, and the sectional cut views. Note that the fiber dispersion here is inversely related to its degree of anisotropy. The peripapillary scleral region ( indicated by the white arrows ) consists of green circumferential fibers and other types of fibers (a), indicating a highly dispersed or isotropic distribution of fibers in these regions, which is associated with higher fiber dispersion (b).