Corneal Backscatter Analysis by In Vivo Confocal Microscopy: Fellow Eye Comparison of Small Incision Lenticule Extraction and Femtosecond Laser-Assisted LASIK

Table 6

Backscattered light intensity 150 μm below the epithelium.

	SMILE (𝑛=30)	Femto-LASIK (𝑛=30)	𝑃
	Mean (SU) ± SD	Mean (SU) ± SD
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.