Table 5.

Analysis of correlation between studied parameter values at baseline and variations of the same parameters during follow-up in both groups, in order to evaluate if baseline values influence the variations detected.

		Var 0−24%
		Group A	Group B
MD	Pearson correlation	0.406	0.757
	Sig. (2-tailed)	0.026	0.000
	N	30	30
RNFL	Pearson correlation	0.374	0.540
	Sig. (2-tailed)	0.042	0.002
	N	30	30
RNFL Sup	Pearson correlation	−0.021	0.728
	Sig. (2-tailed)	0.912	0.000
	N	30	30
RNFL Inf	Pearson correlation	0.036	0.588
	Sig. (2-tailed)	0.849	0.001
	N	30	30
RNFL Nas	Pearson correlation	0.037	0.795
	Sig. (2-tailed)	0.846	0.000
	N	30	30
RNFL Temp	Pearson correlation	0.029	0.619
	Sig. (2-tailed)	0.880	0.000
	N	30	30
GCC	Pearson correlation	0.089	0.467
	Sig. (2-tailed)	0.639	0.009
	N	30	30
GCC Sup	Pearson correlation	0.067	0.421
	Sig. (2-tailed)	0.726	0.021
	N	30	30
GCC Inf	Pearson correlation	−0.239	0.336
	Sig. (2-tailed)	0.204	0.069
	N	30	30

Correlation analysis between the variations of the optic nerve parameters evaluated at the beginning of the study and the values observed after 24 months. MD, mean deviation measured with standard automatic perimetry (SAP); RNFL, overall retinal nerve fiber layer thickness; RNFL Sup, superior retinal nerve fiber layer thickness; RNFL Inf, inferior retinal nerve fiber layer thickness; RNFL Nas, nasal retinal nerve fiber layer thickness; RNFL Temp, temporal retinal nerve fiber layer thickness; GCC, overall ganglion cell complex thickness; GCC Sup, superior ganglion cell complex thickness; GCC Inf, inferior ganglion cell complex thickness measured with ocular coherence tomography (OCT). p, Pearson correlation significance (values < 0.05 in bold; values < 0.005 in bold on gray).