Effects of vitrectomy combined with internal limiting membrane peeling in patients with diabetic macular edema

Table 4 Comparison of the volume of cystoid macular edema between the two groups (n = 92 eyes)

Group (number of affected eyes)	Macular edema cyst volume (mm3) (mean ± SD)			F	P value
	1 week after surgery	1 month after surgery	3 months after surgery
Control group (n = 47)	12.77 ± 1.58	12.06 ± 1.28	11.19 ± 1.30	Fgroup = 9.374	Pintergroup = 0.003
Stripping group (n = 45)	12.89 ± 1.27	10.99 ± 1.34	9.57 ± 1.34	Ftime = 1838.956	Ptime < 0.001
t	0.400	3.917	5.886	Finteraction = 210.654	Pinteraction < 0.001
P value	0.690	< 0.001	< 0.001