Table 3. Corneal astigmatism before and after operation.

Parameters	Group A (n=30)	Group B (n=30)	P
Corneal astigmatism (D)
Preoperation	0.93±0.59	0.89±0.63	0.773
1d postoperation	1.48±0.74	1.20±0.68	0.239
1wk postoperation	1.18±0.71	1.11±0.77	0.239
4wk postoperation	1.02±0.57	0.86±0.57	0.239
6wk postoperation	0.99±0.56	0.84±0.57	0.239
SIA (D)
4wk postoperation	0.28±0.09	0.27±0.09	0.468
6wk postoperation	0.27±0.10	0.25±0.10	0.484

x±s