Local Relationship between Global-Flash Multifocal Electroretinogram Optic Nerve Head Components and Visual Field Defects in Patients with Glaucoma

Table 2

ONHC amplitude measurements and calculated ONHC ratio.

	Normal		Glaucoma
	ONHC amplitude (nV/deg^2)	ONHC ratio	ONHC amplitude (nV/deg^2)	ONHC ratio
Ring 1	16.90 ± 2.99	0.95 ± 0.25	14.33 ± 4.25	0.98 ± 0.21
Ring 2	12.27 ± 5.07	0.67 ± 0.32	7.57 ± 5.12	0.52 ± 0.31
Ring 3	10.69 ± 3.72	0.60 ± 0.29	6.49 ± 5.24	0.43 ± 0.32
Ring 4	8.04 ± 3.26	0.43 ± 0.38	3.98 ± 3.32	0.28 ± 0.22