Topography-guided custom ablation treatment for treatment of keratoconus
A 22-year-old male patient presented to us with keratoconus both eyes, intolerant to contact lens. His right eye UCVA was 6/18 and BCVA was 6/9 with a spectacle correction of −1.0 DS/−3.5DC@70°. His pre-operative pentacam map is shown in which shows an early keratoconus with a partially inferiorly decentred cone. The pre-operative Q measured by Topolyser was −0.67 which also suggests a mild decentration of the cone and it was retained unchanged.\nHe underwent T-CAT with CXL for his right eye. T-CAT was performed with a refractive correction-1.25DS/-2DC@70° after Zernike optimization, maintaining the maximum central ablation to be less than 40 microns.\nPost-operatively his UCVA was 6/12, BCVA was 6/6 with a spectacle correction of +1.00DS/−1.50DC@20°. His pentacam post-operatively [] revealed regularization of the cornea with flattening of the K-values at various points on the sagittal curvature map.