Table 2.

Frequency Distribution of Glaucoma Screening Test Parameters Stratified by Preselected Cutoff Values Based on Three Different Definitions of Glaucoma in Participants in the LALES

Screening Parameters	Preselected Cutoffs	Basis of Glaucoma Diagnosis
		Optic Nerve (n = 270)	Visual Field (n = 231)	Optic Nerve and Visual Field (n = 216)
HVF, expert reading	Glaucomatous	174	185	173
	Nonglaucomatous	96	46	43
HVF, false negatives	≥33%	11	11	11
	<33%	257	219	204
HVF, MD	<5%	211	205	190
	≥5%	58	26	26
HVF, PSD	≥5%	177	178	165
	<5%	92	53	51
HVF, GHT	Outside normal limits	204	208	195
	Other	65	23	21
FDT perimetry	Any defect	150	149	138
	No defect	104	69	68
IOP	≥21 mm Hg	57	53	52
	<21 mm Hg	212	176	163
CCT	≤504 μm	38	41	34
	>504 μm	232	190	182
Vertical C/D ratio	≥0.8	155	133	130
	<0.8	115	98	86

Data are the number of subjects fitting each screening parameter.