表3.

比较术前、术后1个月和6个月角膜中央3 mm区曲率

Table 3 Comparison of corneal curvature in the central corneal region of 3 mm between preoperation, 1 month and 6 months after operation

组别	术前/D	术后1个月/D	术后6个月/D	术后1个月-术前/D	术后6个月-术后1个月/D	术后6个月-术前/D	P1	P2	P3
大K组	43.6±1.65	39.6±2.13	39.6±2.01	-4.05±1.76	0.04±1.64	-4.02±1.94	<0.001	0.845	<0.001
小K组	43.1±1.45	38.5±1.99	38.9±1.90	-4.61±1.74	0.34±1.37	-4.27±1.75	<0.001	<0.001	<0.001

P1：术前 vs 术后1个月；P2：术后1个月 vs 术后6个月；P3：术前 vs 术后6个月。