Demographic and clinical data of the patients with normal tension glaucoma (NTG) and control subjects with corresponding p values (unpaired t test)
| NTG | Control subjects | ||
|---|---|---|---|
| Mean (SD) | Mean (SD) | Significance level (p value) | |
| NS = not significant. | |||
| IOP = intraocular pressure, MD = mean deviation, PSD = pattern standard deviation, SF = short term fluctuation, CPSD = corrected pattern standard deviation. | |||
| Age (years) | 51 (10) | 44 (16) | NS |
| IOP (mm Hg) | 15.6 (3) | 15.5 (3) | NS |
| Systolic blood pressure (mm Hg) | 123.9 (17) | 130.3 (16) | NS |
| Diastolic blood pressure (mm Hg) | 75.2 (11) | 74.1 (11) | NS |
| Mean arterial blood pressure (mm Hg) | 91.3 (12) | 92.6 (12) | NS |
| Heart rate (beats/min) | 73 (11) | 72 (11) | NS |
| Perfusion pressure (mm Hg) | 44.6 (8) | 46.1 (7) | NS |
| MD (dB) | −6.8 (6.7) | −0.99 (1.5) | p<0.01 |
| PSD (dB) | 7.2 (4.9) | 1.8 (0.4) | p<0.0001 |
| SF (dB) | 2.0 (1.2) | 1.3 (0.3) | p<0.05 |
| CPSD (dB) | 6.9 (4.9) | 1.0 (0.8) | p<0.0001 |
| Cup to disc area ratio | 0.52 (0.13) | 0.28 (0.16) | p<0.0001 |
| Disc area (mm2) | 1.76 (0.39) | 1.55 (0.42) | NS |