Tangential curvature maps of the anterior cornea for all eyes included in Group 0 (patients determined clinically to be LASIK candidates, n=10)(Top Left), Group 1 (atypical/irregular eyes, n=8)(Top Right), Group 2 (disqualified refractive surgery screening eyes, n=10)(Bottom Left), and Group 3 (manifest keratoconus, n=12)(Bottom Right). The left member of each pair is derived directly from clinical tomography. The right member of each pair is the computational representation of the eye after the finite element meshing process. The color scale in diopters is identical for all maps and is presented in the upper left corner.