Table 2.

SMILE—preoperative versus 3-month postoperative corneal densitometry.

SMILE
		0–2 mm	2–6 mm	Total (0–6 mm annulus)
Anterior (120 μm)	Preop	24.8 ± 1.6 (19.6 to 27.1)	22.4 ± 1.7 (16.1 to 25.7)	23.6 ± 1.6 (17.9 to 26.4)
	3 months postop	25.1 ± 1.8 (20.8 to 28.9)	23.0 ± 1.8 (16.7 to 26.3)	24.0 ± 1.8 (18.8 to 27.6)
	P value	0.105	<0.001	0.003
Central layer	Preop	15.4 ± 1.0 (12.3 to 17.2)	14.1 ± 1.1 (10.2 to 16.6)	14.8 ± 1.0 (11.3 to 16.9)
	3 months postop	15.6 ± 1.0 (13.2 to 17.4)	14.2 ± 1.0 (10.5 to 15.8)	14.9 ± 1.0 (11.9 to 16.5)
	P value	0.015	0.317	0.078
Posterior (60 μm)	Preop	13.0 ± 1.0 (9.7 to 15.9)	12.2 ± 1.1 (8.7 to 15.3)	12.6 ± 1.1 (9.2 to 15.6)
	3 months postop	12.6 ± 0.9 (10.9 to 14.9)	12.0 ± 1.0 (9.3 to 13.8)	12.3 ± 0.9 (10.1 to 14.3)
	P value	0.001	0.264	0.012
Total (all layers)	Preop	17.8 ± 1.1 (13.9 to 20.0)	16.2 ± 1.2 (11.6 to 19.0)	17.0 ± 1.2 (12.8 to 19.5)
	3 months postop	17.8 ± 1.1 (15.0 to 19.8)	16.4 ± 1.2 (12.2 to 18.4)	17.1 ± 1.1 (13.6 to 19.0)
	P value	0.877	0.073	0.259