Table 4.

Classification for glaucomatous optic neuropathy.

Classification	Clinical features
Unlikely glaucomatous optic neuropathy	No sign of the conditions below
Probable glaucomatous optic neuropathy	Any conditions of the following:
	0.7 ≤ VCDR < 0.85;
	general rim thinning ≥60° or localized rim
	thinning <60° (11 to 1 o´clock or 5 to 7 o´clock);
	RNFL defects;
	peripapillary hemorrhages.
Definite Glaucomatous optic neuropathy	Any conditions of the following:
	VCDR ≥ 0.85;
	localized notches;
	RNFL defect corresponds to narrowing of rim or localized notches.

RNFL retinal nerve fiber layer, VCDR vertical cup-disc ratio.