Table 2.
Baseline values of ocular and systemic haemodynamic parameters and blood gas values
| Parameters | Smokers | Non-smokers | p Value (ANOVA) |
| SBP (mm Hg) | 118(3)* | 117 (3) | 0.845 |
| DBP (mm Hg) | 67(3) | 56 (4) | 0.041 |
| MAP (mm Hg) | 85(3) | 76 (3) | 0.058 |
| PR (beats/min) | 71(2.0) | 69 (3.0) | 0.553 |
| Choroidal red blood cell velocity (AU) | 0.46 (0.02) | 0.47 (0.02) | 0.763 |
| Choroidal red blood cell volume (AU) | 0.29 (0.03) | 0.21 (0.02) | 0.026 |
| Choroidal blood flow (AU) | 11.8 (1.0) | 8.6 (0.8) | 0.018 |
| ONH red blood cell velocity (AU) | 0.35 (0.02) | 0.33 (0.02) | 0.510 |
| ONH red blood cell volume (AU) | 0.30 (0.04) | 0.25 (0.03) | 0.371 |
| ONH blood flow (AU) | 9.1 (1.0) | 7.1 (0.7) | 0.149 |
| Arterial retinal diameter (μm) | 125.8 (4.7) | 125.2 (4.0) | 0.924 |
| Venous retinal diameter (μm) | 158.8 (4.5) | 139.5 (3.9) | 0.091 |
| Fundus pulsation amplitude (μm) | 3.6 (0.3) | 3.8 (0.2) | 0.713 |
| PO2 (mm Hg) | 83.4 (2.2) | 83.9 (1.1) | 0.824 |
| PCO2 (mm Hg) | 41.1 (1.0) | 42.1 (0.9) | 0.438 |
| SaO2 (%) | 95.6 (0.4) | 95.9 (0.2) | 0.603 |
SBP, systolic blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure; PR, pulse rate; AU, arbitrary units; ONH, optic nerve head.
*Data are presented as mean (SEM).