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

Table 4

HOA-RMS: high-order aberration root mean square; Coma-RMS: coma root mean square.

	1 month	6 months	12 months	24 months
SMILE: HOA-RMS (microns)	0.17 ± 0.10	0.20 ± 0.20	0.14 ± 0.07	0.13 ± 0.07
SMILE Xtra: HOA-RMS (microns)	0.17 ± 0.09	0.19 ± 0.14	0.12 ± 0.06	0.13 ± 0.07
value	0.835	0.918	0.116	0.736
SMILE: Coma-RMS (microns)	0.12 ± 0.15	0.14 ± 0.34	0.06 ± 0.07	0.12 ± 0.21
SMILE Xtra: Coma-RMS (microns)	0.16 ± 0.18	0.08 ± 0.10	0.06 ± 0.05	0.16 ± 0.25
value	0.440	0.335	0.921	0.589