Can Variability of Pattern ERG Signal Help to Detect Retinal Ganglion Cells Dysfunction in Glaucomatous Eyes?

Table 1

Demographic data.

	Patients
	EG (37)		GS (21)		NC (24)		value^*
	Mean	SD ±	Mean	SD ±	Mean	SD ±
Age	57.1	11.6	56.1	10.5	53	6.3
Male (%)	40.5		42.4		41.5
IOP (mmHg)	15.6	1.1	17.9^ac	1.6	15.1	1.7
CCT (m)	546.6	26.6	553.1	32.1	558.7	19.1
MD (dB)	−3.010^ab	1.95	0.004	1.04	−0.02	1.5
PSD (dB)	3.45^ab	2.04	1.59	0.49	1.47	0.23
RNFL (m)	81.56^ab	9.26	90.8	7.5	94.9	10.1
GCC (m)	76.13^ab	6.88	82.09	6.53	84.7	4.9
Amplitude (V)	0.96^ab	0.33	0.96^a	0.27	1.2	0.26
Phase ( rad)	−0.06	0.36	−0.01	0.26	0.19	0.38
CV_amp (%)	20.25^ab	13.52	14.27^a	7.05	9.42	3.99
CV_phase (%)	8.97^b	2.52	7.30^a	2.51	3.4	1.13

One-way analysis of variance (Bonferroni corrected).
Chi-square.
^aStatistically significant difference from normal control (NC).
^bStatistically significant difference from glaucoma suspects (GS).
^cStatistically significant difference from early manifest glaucoma patients (EG).