Three-Year Outcomes of Cross-Linking PLUS (Combined Cross-Linking with Femtosecond Laser Intracorneal Ring Segments Implantation) for Management of Keratoconus

Table 2

CXL PLUS preoperative and postoperative data summary at the end of the 3-year follow-up.

Parameters	Preoperative data; (mean ± SD)	Postoperative 36th month data (mean ± SD)	value
Mean K reading average (D)	50.63 ± 0.87	45.56 ± 0.98	<0.05
Mean K1 reading	46.94 ± 0.26	46.45 ± 0.98	<0.05
Mean K2 reading	54.38 ± 1.17	47.39 ± 0.62	<0.05
Mean corneal thickness at thinnest location (μm)	471 ± 92.36	423 ± 39.85	<0.05
Mean postoperative myopic correction (D)	—	0.97 ± 0.28
Mean astigmatism (D)	7.55 ± 1.75	3.39 ± 1.26	<0.05
Mean postoperative astigmatic correction (D)	—	3.8 ± 1.67
Mean UCVA (logMAR)	1.30 ± 0.48	0.82 ± 0.22	<0.05
Mean BCVA (logMAR)	0.90 ± 0.40	0.60 ± 0.30	<0.05