Characteristics of eyes categorised by smoking history
| Smoking history (+) | Smoking history (−) | P value | |
| Characteristic | n=72 eyes of 56 patients | n=151 eyes of 107 patients | |
| Age, years | 73.8 (71.2 to 76.4) | 72.6 (70.6 to 74.6) | 0.485 |
| Sex, female (%) | 25 (44.6) | 63 (58.9) | 0.099 |
| Race (African American/non-African American) | 10/46 | 24/83 | 0.548 |
| Hypertension, n (%) | 37 (66.1) | 52 (48.6) | 0.046 |
| Diabetes, n (%) | 8 (14.3) | 21 (19.6) | 0.519 |
| Disease severity by VF MD | 0.004 | ||
| Early glaucoma, eye no (%) | 28 (38.9) | 91 (60.3) | |
| Moderate and advanced glaucoma, eye no (%) | 44 (61.1) | 60 (39.7) | |
| Presence of choroidal MvD, eye no (%) | 37 (51.4) | 67 (44.4) | 0.389 |
| Choroidal MvD area among eyes with MvD, mm2 | 0.33 (0.24 to 0.43) | 0.24 (0.20 to 0.28) | 0.068 |
| Choroidal MvD angle among eyes with MvD, degree | 99.0 (82.5 to 115.5) | 75.7 (66.2 to 85.1) | 0.046 |
| Axial length, mm | 24.4 (24.1 to 24.7) | 24.4 (24.2 to 24.6) | 0.942 |
| CCT, µm | 536.2 (527.1 to 545.4) | 535.6 (528.2 to 543.0) | 0.927 |
| IOP, mm Hg | 14.5 (12.8 to 16.1) | 13.7 (12.9 to 14.5) | 0.431 |
| 24-2 VF MD, dB | −8.9 (−10.6 to −7.3) | −6.9 (−7.9 to −5.9) | 0.053 |
| Average SSI | 58.4 (56.6 to 60.3) | 58.8 (57.4 to 60.2) | 0.779 |
Values are shown in mean (95% CI), unless otherwise indicated. Bold text indicates a statistically significant difference with a p value less than 0.05.
CCT, central corneal thickness; IOP, intraocular pressure; MD, mean deviation; MvD, microvasculature dropout; SSI, Signal Strength Index; VF, visual field.