Effect of capsule treatment on visual acuity and quality after phacoemulsification lens implantation in myopic patients with cataract

Table 3 Comparison of objective visual quality between the two groups before and after operation

Index	Observation group (70 eyes)	Control group (64 eyes)	t	P value
OSI
Preoperative	1.89 ± 0.33	1.92 ± 0.31	-0.541	0.589
6 months after operation	0.62 ± 0.21a	1.32 ± 0.26a	-17.209	0.000
MTF cut off (c/deg)
Preoperative	8.28 ± 2.21	8.60 ± 2.03	-0.870	0.386
6 months after operation	22.32 ± 5.12a	14.44 ± 3.82a	10.022	0.000
100% OV
Preoperative	0.26 ± 0.08	0.28 ± 0.09	-1.362	0.176
6 months after operation	0.88 ± 0.20a	0.54 ± 0.18a	10.308	0.000
20% OV
Preoperative	0.28 ± 0.09	0.29 ± 0.07	-0.713	0.477
6 months after operation	0.78 ± 0.10a	0.40 ± 0.11a	20.947	0.000
9% OV
Preoperative	0.09 ± 0.03	0.10 ± 0.03	-1.927	0.056
6 months after operation	0.36 ± 0.06a	0.18 ± 0.04a	20.235	0.000

^aP < 0.05 when compared with preoperative. OSI: Objective scattering index; MTF: Modulation transfer function.