Table 1: Mean, standard deviation (SD) and range of the parameters in the four groups evaluated in our study.

ParametersMean ± SDRange

Healthy,
 Age (years) From 22 to 81
 SE (D) From −7.0 to 2.5
 KM (D) From 40.9 to 45.9
 CCT (μm) From 498 to 631
 TP (μm) From 496 to 627
 IOP (mmHg) From 13 to 24
PRK,
 Age (years) From 23 to 48
 FU (months) From 13 to 17
 KM (D) From 36.1 to 43.9
 CCT pupil center (μm) From 390 to 495
 CCT thinnest (μm) From 389 to 494
 IOP (mmHg) From 13 to 19
KC,
 Age (years) From 19 to 37
 KM (D) From 43.9 to 53.9
 CCT pupil center (μm) From 426 to 548
 CCT thinnest (μm) From 400 to 531
 IOP (mmHg) From 11 to 16
CCC,
 Age (years) From 21 to 29
 FU (months) From 15 to 18
 KM (D) From 43.6 to 54.5
 CCT pupil center (μm) From 460 to 551
 CCT thinnest (μm) From 421 to 546
 IOP (mmHg) From 11.5 to 16.0

SE: Spherical equivalent; FU: follow up from surgery; KM: anterior corneal curvature measured with Sim’K; CCT: central corneal thickness; TP: corneal thinnest point; intraocular pressure (IOP).