Table 4.

Index of success (IOS) at each follow-up of 98 eyes (Mean ± SD)

IOS	Preoperative cylinder (D)
	>0 to ≤ -0.50	> - 0.50 to ≤ -1.00	> - 1.00 to ≤ -2.00	> - 2.00 to ≤ -3.00	Total
	(n = 47)	(n = 21)	(n = 21)	(n = 9)	(n = 98)
1 month	0.81 ± 2.91	0.27 ± 0.29	0.26 ± 0.19	0.22 ± 0.22	0.52 ± 2.03
6 months	0.43 ± 0.54	0.32 ± 0.29	0.23 ± 0.22	0.19 ± 0.23	0.34 ± 0.42
12 months	0.39 ± 0.57	0.20 ± 0.24	0.20 ± 0.22	0.17 ± 0.21	0.29 ± 0.44