Figure 7
From: Etiology of Keratoconus: proposed biomechanical pathogenesis
Deformations and dioptric power maps for cases #11 -13 are presented. The maximum elevation in the isotropic case is larger than the transversely isotropic case which is also larger than the orthotropic case. The central region (where the weak region is located) in the isotropic case exhibits an increase in diopters relative to the periphery whereas cases #12 and #13 show the opposite.