Long-Term Clinical Outcomes of Small-Incision Femtosecond Laser-Assisted Intracorneal Concave Lenticule Implantation in Patients with Keratoconus

Table 2

Postoperative changes in corneal biomechanics.

Parameters	Time
	Preop	1 wk Postoperatively	1 mo Postoperatively	3 mo Postoperatively	6 mo Postoperatively	12 mo Postoperatively	24 mo Postoperatively	36 mo Postoperatively	60 mo Postoperatively	F	P60mo
CCT, μm	434.75 ± 14.18	616.75 ± 34.26	622.88 ± 35.84	613.25 ± 34.83	607.50 ± 29.07	617.12 ± 28.03	620.13 ± 31.84	601.25 ± 28.56	610.88 ± 27.40	24.311	0.000
SP-A1, mmHg/mm	42.73 ± 8.93	80.08 ± 8.94	89.09 ± 10.51	84.26 ± 9.28	83.95 ± 9.53	81.56 ± 7.65	76.75 ± 7.01	79.38 ± 7.26	79.83 ± 6.55	16.666	0.000
DA Ratio, mm	6.13 ± 0.39	5.15 ± 0.24	5.40 ± 0.29	5.48 ± 029	5.58 ± 0.32	7.30 ± 2.01	6.77 ± 1.14	6.65 ± 0.72	6.35 ± 0.60	1.159	0.347
SSI	0.63 ± 0.03	0.55 ± 0.03	0.53 ± 0.05	0.47 ± 0.04	0.46 ± 0.05	0.52 ± 0.05	0.53 ± 0.05	0.56 ± 0.06	0.60 ± 0.03	2.580	0.103
bIOP, mmHg	11.37 ± 2.32	16.85 ± 3.14	12.75 ± 2.18	10.87 ± 2.31	11.19 ± 2.11	11.93 ± 1.97	12.03 ± 1.97	12.65 ± 1.89	12.53 ± 1.84	0.480	0.502

CCT, central corneal thickness; SP-A1, stiffness parameter at applanation 1; DA ratio, deformation amplitude ratio; SSI, stress-strain index, bIOP, biomechanically corrected intraocular pressure; bold entries indicate .