Topography-guided custom ablation treatment for treatment of keratoconus
A 28 year-old male patient with keratoconus presented with UCVA of 6/60 and BCVA of 6/9 with a spectacle correction −5.5DC@30°. His pre-operative pentacam [] revealed grade 2 keratoconus. His pre-operative Q as measured by Topolyzer was −0.54 which suggests a more decentred cone. The Q value was retained unchanged during the planning for T-CAT. The refractive power treated was +0.75DS/−3DC@6° after Zernike optimization.\nPost-operatively his UCVA improved to 6/24p and BCVA TO 6/6p with a spectacle correction of −1DS/−2.25DC@30°. His pentacam revealed good centration of the cone post-operatively, with relative flattening of the cornea [].