Conbercept combined with laser photocoagulation in the treatment of diabetic macular edema and its influence on intraocular cytokines

Table 3 Retinal thickness before and after treatment

Group	Number of cases	Retinal thickness (μm)
		Prior treatment	One month of treatment	Three months of treatment	Treatment for 6 mo
Control group	65	637.20 ± 101.96	431.12 ± 90.221	320.16 ± 88.711,2	241.92 ± 70.431,2,3
Observation group	65	638.39 ± 103.16	316.31 ± 86.721	221.43 ± 90.221,2	170.62 ± 72.341,2,3
t value		-0.492	6.216	6.535	5.863
P value		0.624	< 0.001	< 0.001	< 0.001

¹Indicates the intra-group comparison with that before treatment, P < 0.05.

²demonstrates that compared with 1 mo after treatment, P < 0.05.

³Indicates P < 0.05, in the group compared with 3 mo of treatment.