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

Table 6.

Backscattered light intensity 150 µm below the epithelium.

	SMILE (n = 30)	Femto-LASIK (n = 30)	P
	Mean (SU) ± SD	Mean (SU) ± SD	P
Preoperative	1001.25 ± 85.32	995.40 ± 88.74	0.017
Week 1*	1671.75 ± 275.58	1312.65 ± 244.89
Month 1*	1427.67 ± 289.44	1292.67 ± 227.16
Month 3	1246.23 ± 207.00	1181.61 ± 198.18
Month 6	1161.99 ± 167.76	1193.04 ± 163.71

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

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