Table 2.
Participant Demographics and Ocular Characteristics
| Characteristic | Value |
||
|---|---|---|---|
| All Participants | Glaucoma | Nonglaucoma | |
| No. | 943 | 158 | 770 |
| Mean age (SD), yrs | 60.5 (13.8) | 67.4 (12.7) | 59.2 (13.6) |
| Female gender, no. (%) | 482 (51.1) | 74 (46.8) | 401 (52.1) |
| Ethnicity, no. (%)∗ | |||
| Black or black Caribbean | 25 (2.7) | 4 (2.5) | 21 (2.7) |
| Black or black British-African | 20 (2.1) | 6 (3.8) | 14 (1.8) |
| Asian or Asian British-Indian | 18 (1.9) | 5 (3.2) | 13 (1.7) |
| Asian or Asian British-Pakistani | 4 (0.4) | 0 (0) | 4 (0.5) |
| Chinese | 1 (0.1) | 1 (0.6) | 0 (0) |
| Other Asian background | 4 (0.4) | 1 (0.6) | 3 (0.4) |
| Mixed white and black African | 1 (0.1) | 1 (0.6) | 0 (0) |
| White British | 826 (89.2) | 140 (88.6) | 686 (89.1) |
| Other | 29 (3.1) | 0 (0) | 29 (3.8) |
| Right Eye | Left Eye | ||
| Refraction | |||
| Mean sphere D, Mean (SD), n | 0.4 (3.3), 571 | 1.0 (3.6), 561 | |
| Myopia greater than –5 D, N/n (%) | 37/943 (3.9) | 36/943 (3.8) | |
| Hyperopia greater than +5 D, N/n (%) | 38/943 (4.0) | 51/943 (5.4) | |
| Astigmatism greater than 3 D, N/n (%) | 16/943 (1.7) | 16/943 (1.7) | |
| Visual acuity logMAR, Mean SD, n | 0.0 (0.30), 925 | 0.0 (0.3), 926 | |
D = diopter; logMAR = logarithm of the minimum angle of resolution; SD = standard deviation.
∗
Self-reported ethnicity; no ethnicity was recorded for 15 participants.