Goldmann applanation tonometry compared with corneal-compensated intraocular pressure in the evaluation of primary open-angle Glaucoma

Table 2 Normal-tension glaucoma patient characteristics

Category	All NTG	NTG with high IOPcc	NTG with low IOPcc
Criteria	GAT ≤ 21 mm Hg	GAT ≤ 21 mm Hg, IOPcc > 21 mm Hg	GAT ≤ 21 mm Hg, IOPcc ≤ 21
Number of patients/eyes	102	39	63
Age (years), mean ± SD	68.7 ± 10.9	70.0 ± 8.6*	67.8 ± 12.1*
GAT (mm Hg)	14.4 ± 3.4	17.6 ± 1.4*	12.4 ± 2.6*
IOPg (mm Hg)	14.4 ± 3.4	17.6 ± 1.4*	12.4 ± 2.6*
IOPcc (mm Hg)	19.8 ± 3.4	23.3 ± 1.4*	17.7 ± 2.4*
IOPcc-GAT (mm Hg)	5.4 ± 1.1	5.6 ± 1.0	5.2 ± 1.1
CCT (μm)	513 ± 39	522 ± 35	507 ± 40
Female	52%	64%	46%
Right eye	42%	33%	49%
Asian	11%	8%	13%
Caucasian	26%	28%	25%
Mixed	47%	56%	41%
Black	12%	8%	16%

*p ≤ 0.05 for comparison between NTG with high IOPcc and NTG with low IOPcc.
HTG: high-tension glaucoma; NTG: normal-tension glaucoma; GON: glaucomatous optic neuropathy; GAT: Goldmann applanation tonometry; IOPg: Goldman-correlated intraocular pressure; IOPcc: corneal compensated intraocular pressure; CCT: central corneal thickness.

ISSN: 1471-2415