Figure 7.

A comparison of the experimental (a) [46], the FM predicted (b) and the CM predicted (c) radial strains for the sagittal section of the optic nerve head along the Nasal-Temporal (NT) direction at 30 mm Hg. The red arrows indicate the direction of radial strain at through-thickness points, represented by corresponding dashed lines, which are oriented from anterior to posterior. The detailed direction convention can also be found in Figure 6. The experimental radial strain derived from a human eye exhibits depth-dependent variation, compressing more at the anterior and less, or stretching, at the posterior (a). Note that the fiber model faithfully replicated this pattern, but the continuum model failed to reflect it.