Ganglion cell complex and retinal nerve fiber layer thickness in predicting visual outcome in brain tumors after surgery

Table 6 Univariate analysis of factors predictive of blindness

Variables		Preoperative		Final postoperative
		Cor (95%CI)	P value	Cor (95%CI)	P value
Age		0.99 (0.93-1.06)	0.915	1.00 (0.92-1.08)	0.991
Duration of symptoms		0.96 (0.86-1.06)	0.45	0.98 (0.89-1.08)	0.764
Preoperative mean RNFL thickness	Superior	0.95 (0.92-0.98)	< 0.01	0.96 (0.94-0.99)	< 0.01
	Inferior	0.96 (0.93-0.98)	< 0.01	0.96 (0.94-0.98)	< 0.01
	Nasal	0.97 (0.93-1.00)	0.06	0.98 (0.95-1.01)	0.273
	Temporal	0.93 (0.87-0.99)	< 0.05	0.95 (0.88-1.01)	0.11
Preoperative mean GCC thickness		0.95 (0.91-0.99)	< 0.05	0.95 (0.91-0.99)	< 0.05
Tumor volume		1.00 (0.99-1.00)	0.128	1.00 (0.99-1.00)	0.09
Duration of surgery		1.61 (0.95-2.75)	0.078	1.57 (0.83-2.99)	0.166
Surgical approach		3.23 (0.55-18.96)	0.194	4 (0.39-40.1)	0.239

GCC: Ganglion cell complex; RNFL: Retinal nerve fiber layer.