“…4,[6][7][8][35][36][37][38][39][40][41][42][43] In addition, new mathematic methods to reconstruct anterior corneal geometry have been developed. 44 However, it has been shown that the underlying alterations in corneal biomechanics in eyes with keratoconus induce changes in the geometry and optical properties of the anterior corneal surface 22,45 but also have an impact on the posterior corneal surface, 4,[9][10][11][12]14,15 corneal volume, 16,17 and pachymetry. 3,17 Complete characterization of the corneal structure that includes analysis of the anterior corneal surface and other objective factors is necessary for better comprehension of visual performance and symptoms in keratoconus.…”