The Effect of the Idiopathic Epiretinal Membrane and Surgically Induced Posterior Vitreous Detachment on the Retinal Nerve Fiber Layer

Table 4

Retinal nerve fiber layer thickness (μm) change in the temporal quadrant of the groups.

	Group 1 (fellow eyes)		Group 2 (vitrectomized eyes)
	Mean ± SD	Median	Mean ± SD	Median
RNFL temporal
Preoperative	79.69 ± 3.67	79.60	90.31 ± 3.50	90.05	0.000
1^st month	79.69 ± 3.66	79.55	92.26 ± 3.26	91.80	0.000
Preoperative-1^st month change	0.00 ± 0.07	0.00	1.95 ± 1.06	2.05	0.000
Intergroup change	0.315		0.000
2^nd month	79.68 ± 3.71	79.40	92.18 ± 3.25	91.65	0.000
Preoperative-2^nd month change	−0.01 ± 0.21	−0.10	1.86 ± 1.05	2.00	0.000
Intergroup change	0.198		0.000
3^rd month	79.67 ± 3.70	79.40	92.07 ± 3.29	91.50	0.000
Preoperative-3^rd month change	−0.02 ± 0.27	−0.10	1.76 ± 1.03	1.90	0.000
Intergroup change	0.098		0.000
6^th month	79.71 ± 3.66	79.40	82.23 ± 3.57	81.55	0.000
Preoperative-6^th month change	0.02 ± 0.32	−0.20	−8.09 ± 2.59	−8.25	0.000
Intergroup change	0.075		0.000
12^th month	79.70 ± 3.65	79.35	78.25 ± 3.01	78.50	0.032
Preoperative-12^th month change	0.01 ± 0.39	−0.30	−12.06 ± 2.99	−12.30	0.000
Intergroup change	0.216		0.000

Wilcoxon test, RNFL- retinal nerve fiber layer, μm- micrometer, SD- standard deviation.