Table 1 Case definitions for glaucoma and glaucomatous conditions [95]

Normal

No glaucomatous appearing disc changes (described below), Normal visual field (describe below), statistically normal IOP (<21 mmHg)

Ocular hypertension

No glaucomatous appearing disc changes (described below), Normal visual field, statistically elevated IOP (≥21 mmHg).

Glaucoma suspect

The presence of glaucomatous appearing disc changes (described below), Normal visual field.

Glaucoma

The presence of glaucomatous appearing disc changes (described below) and an abnormal visual field.

Glaucomatous appearing optic disk

Evidence of excavation, neuroretinal rim thinning or notching, localized or diffuse retinal nerve fiber layer (RNFL) defect, or a between eye asymmetry of the vertical cup disc ratio >0.2.

Glaucomatous visual field defect

A reliable standard automated perimetry (SAP) Humphrey 24-2 field (defined as <33 % false positives, false negatives, and fixation losses) that exhibits a pattern standard deviation outside the 95 % normal limits or a glaucoma hemifield test outside of the 99 % normal limits consistent with a RNFL defect pattern based on clinical review.