PMC

Eighteen-month postoperative topographic corneal map of patient (MG) from group 2.
Note: An inferior corneal steepening is evidenced (Eye Top, CSO, absolute scale, axial map).
Abbreviation: SIM K, simulated keratometry value.

Preoperative topographic corneal map of a 22-year-old male patient (MG) in group 2 (Eye Top, CSO, absolute scale, axial map).
Abbreviation: SIM K, simulated keratometry value.

Preoperative tomographic corneal map of a 32-year old male patient (DEE) in group 2.
Note: Top left anterior elevation map, top right posterior elevation map, bottom left axial map, bottom right pachymetric map (Orbscan, Bausch and Lomb).

Preoperative topographic corneal map of a 26-year old female patient (DPL) in group 1. Absolute scale, left tangential map, right axial map (Keratron Scout, Optikon 2000).
Abbreviation: SIM K, simulated keratometry value.

Two-year postoperative tomographic corneal map of a patient (DEE) from group 2.
Notes: A corneal thinning in the treated center area, with a steepening and posterior corneal bulge evident. Top left anterior elevation map, top right posterior elevation map, bottom left axial map, bottom right pachymetric map (Orbscan, Bausch and Lomb).

Three-year postoperative topographic corneal map of a patient (DPL) from group 1.
Notes: A corneal thinning in the center treated area, with a steepening and a posterior corneal bulge is evidenced. Top left anterior elevation map, top right posterior elevation map, bottom left axial map, bottom right pachymetric map (Orbscan, Bausch and Lomb).