Table 1.

Refraction and keratometry assessed during follow-up visits in the two study groups

	Group A (mean ± SD)	Group B (mean ± SD)	P -value
Refraction (D)
Preoperative	+ 3.2 ± 1.2	+ 3.3 ± 1	0.6271
1 day postop.	+ 0.26 ± 0.21	+ 0.24 ± 0.22	0.6092
1 week postop.	+ 0.26 ± 0.21	+ 0.27 ± 0.19	0.7392
1 month postop.	+ 0.31 ± 0.21	+ 0.33 ± 0.22	0.5262
3 months postop.	+ 0.4 ± 0.24	+ 0.45 ± 0.27	0.3052
6 months postop.	+ 0.5 ± 0.31	+ 0.67 ± 0.39	0.009 2*
12 months postop.	+ 0.63 ± 0.37	+ 0.89 ± 0.48	0.002 2*
p –value	<  0.001 3*	<  0.001 3*
Average keratometry (D)
Preoperative	42 ± 1.5	41.6 ± 1.5	0.0842
1 day postop.	44 ± 2.9	44 ± 1.5	0.9292
1 week postop.	44.2 ± 1.5	44 ± 1.5	0.3682
1 month postop.	44.2 ± 1.5	43.9 ± 1.5	0.3272
3 months postop.	44.1 ± 1.5	43.9 ± 1.5	0.3232
6 months postop.	44 ± 1.5	43.7 ± 1.6	0.1492
12 months postop.	43.9 ± 1.5	43.6 ± 1.6	0.038 2*
P –value	<  0.001 3*	<  0.001 3*

¹Student’s t test; ²Mann-Whitney U test; ³Friedman test;

* Statistically significant at p <  0.05