Clinical Outcomes Comparison of Combined Small Incision Lenticule Extraction with Collagen Cross-Linking Versus Small Incision Lenticule Extraction Only

Table 1

SEQ: spherical equivalent; CDVA: corrected distance visual acuity; K-avg: Keratometry average; K-max: Keratometry maximum; TPP: thinnest point pachymetry; maximum posterior elevation; HOA-RMS: high-order aberration root mean square; Coma-RMS: coma root mean square.

	SMILE	SMILE xtra	value
Male: female	5 : 9	4 : 11	0.187
Age (years)	36.45 ± 8.84	33.20 ± 7.98	0.056
SEQ (D)	−7.18 ± 1.21	−6.27 ± 2.95	0.208
CDVA (logMAR)	−0.02 ± 0.05	−0.03 ± 0.06	0.805
K-avg (D)	43.86 ± 1.34	44.13 ± 1.18	0.394
K-max (D)	45.20 ± 1.44	45.61 ± 1.36	0.236
TPP (microns)	543.90 ± 22.85	523.40 ± 37.01	0.013
MPE (microns)	8.63 ± 4.35	8.13 ± 2.54	0.556
HOA-RMS	0.08 ± 0.03	0.08 ± 0.03	0.505
Coma-RMS	0.06 ± 0.09	0.04 ± 0.03	0.112