Clinical Study

Simultaneous Transepithelial Topography-Guided Photorefractive Keratectomy and Accelerated Cross-Linking in Keratoconus: 2-Year Follow-Up

Table 3

Attempted correction and ablation charactheristics.

Mean ± SDMedianMinimum/Maximum

Optical zone diameter (mm)5.93 ± 0.5865/7

Transition zone diameter (mm)0.72 ± 0.290.630.33/1.46

Total ablation zone (mm)6,65 ± 0,716,635.33/8.23

Maximum ablation depth (μ)76± 358516/138

Central ablation depth (μ)48 ± 28622/96

Minimum ablation depth (μ)35± 28560.003/61

Ablation volume (μm3)1745 ±12392001183/4232

Attempted sphere (D)-1.15 ± 1.51-1.00-4.87/1.30

Attempted cylinder (D)-1.10 ± 0.75-0.81-2.99/0

: ablation profile was evaluated by the surgeon. Maximum ablation depth was limited to 50 μ over the cone. Paracentral ablation was not limited.