Table 1.

African Descent and Evaluation Study (ADAGES) classification system. Modified from: Sample PA, Girkin CA, Zangwill LM, et al. Archives of Ophthalmology 2009;127(9):1136–1145.

Diagnostic category	IOP	Photo grade			24-2 SAP visual field test result
Ocular hypertension	>22 mmHg* or taking IOP-lowering medication	AND	Normal	AND	Normal
Glaucoma suspect (GON only)	Not applicable		Glaucomatous	AND	Normal
Glaucoma with 24-2 visual field loss**	Not applicable		Glaucomatous	AND	Glaucomatous (repeatable)

Abbreviations: IOP= intraocular pressure; GON= glaucomatous optic neuropathy; SAP: standard automated achromatic perimetry

^*Intraocular pressure 22 mmHg or higher measured as such on baseline examination or documented history of such

^**Standard automated perimetry 24-2 visual field results were considered abnormal if the pattern standard deviation (PSD) had a P< 5% or the Glaucoma Hemifield Test result was “outside normal limits.” Abnormality had to be confirmed with an additional visual field test.