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. 2014 Mar 5;2014:265012. doi: 10.1155/2014/265012

Table 2.

Maximum backscattered light intensity in anterior stroma.

	SMILE (n = 30)	Femto-LASIK (n = 30)	P
	Mean (SU) ± SD	Mean (SU) ± SD	P
Preoperative	1147.50 ± 85.77	1138.50 ± 104.04	0.020
Week 1*	1793.70 ± 241.74	1450.80 ± 247.32
Month 1*	1539.00 ± 272.88	1348.11 ± 199.71
Month 3*	1390.77 ± 260.46	1226.16 ± 183.24
Month 6	1242.00 ± 129.33	1232.01 ± 127.44

n: number of patients; SU: scatter units; SD: standard deviation.

*P < 0.05: the difference between the two groups in the change from baseline.