Table 1 Characteristics of eyes that underwent combined transepithelial photorefractive keratectomy and accelerated corneal collagen cross-linking and transepithelial photorefractive keratectomy alone

Age, years old

25.8 ± 5.7 (20 to 38)

25.1 ± 4.6 (20 to 36)

.542

Sex (% women)

43 %

38 %

.717

 Spherical

–5.46 ± 1.20 (–7.50 to–3.00)

–5.78 ± 1.22 (–8.00 to–2.62)

.233

 Cylindrical

–1.44 ± 0.73 (–2.62 to 0)

–1.27 ± 0.83 (–3.25 to 0)

.321

 Spherical equivalent

–6.18 ± 1.28 (–8.12 to–3.50)

–6.42 ± 1.17 (–8.75 to–3.81)

.385

 Flat K

42.3 ± 1.1 (40.3 to 44.3)

42.6 ± 1.3 (39.3 to 44.8)

.242

 Steep K

44.1 ± 1.2 (41.0 to 46.0)

44.2 ± 1.5 (41.0 to 47.0)

.748

Preoperative CDVA

1.00 ± 0.02 (1.00 to 1.00)

1.01 ± 0.04 (1.00 to 1.00)

.160

Preoperative UDVA

0.04 ± 0.03 (0.01 to 0.15)

0.04 ± 0.02 (0.02 to 0.10)

.755

Optical zone (mm)

6.36 ± 0.23 (5.80 to 6.90)

6.32 ± 0.16 (6.00 to 6.70)

.280

Total ablation zone (mm)

8.10 ± 0.28 (7.45 to 8.64)

8.17 ± 0.36 (7.66 to 9.00)

.335

Ablation depth (μM)

101.54 ± 19.65 (54.13 to 128.68)

97.71 ± 20.56 (48.54 to 146.94)

.391

CCT (μM)

510.2 ± 32.9 (460.0 to 590.0)

537.8 ± 23.2 (501.0 to 610.0)

<.001