Vertical cup:disc ratio (VCDR) distribution in people with normal visual fields in one African and three Asian countries
| CDR | CDR asymmetry | |||||
|---|---|---|---|---|---|---|
| 97.5th percentile | 99.5th percentile | 97.5th percentile | 99.5th percentile | Subjects with a normal field | Total number of subjects | |
| *Field testing was carried out in subjects with either CDR ≥0.35 or IOP ≥ 18 mm Hg. Data presented include those who did not meet these criteria, and therefore did not undergoing field testing. | ||||||
| †Field testing carried out on all subjects. | ||||||
| Bangladesh* | 0.70 | 0.85 | 0.15 | 0.3 | 220* | 2426 |
| Mongolia† | 0.70 | 0.70 | 0.2 | 0.3 | 1551 | 1717 |
| Singapore† | 0.71 | 0.82 | 0.21 | 0.32 | 835 | 1090 |
| Tanzania† | 0.7 | 0.8 | 0.2 | 0.3 | 2524 | 3268 |