Table 1.
Prevalence of vision impairment and blindness based on presenting and best corrected visual acuity*
| Better eye visual acuity | |||||
| ≥6/18 | <6/18 to ≥6/60 | <6/60 to ≥3/60 | <3/60 | All | |
| Worse eye visual acuity | |||||
| NN | |||||
| ≥6/18 | 3216 (59.5) | 3216 (59.5) | |||
| 4095 (75.8) | 4095 (75.8) | ||||
| VI | |||||
| <6/18 | |||||
| To | 1013 (18.7) | 1013 (18.7) | |||
| ≥6/60 | 541 (10.0) | 541 (10.0) | |||
| UL | MB | ||||
| <6/60 | |||||
| To | 434 (8.0) | ||||
| ≥3/60 | 103 (1.9) | ||||
| 584 (10.8, 9.9 to 11.7) | 370 (6.8, 5.4 to 8.3) | ||||
| 521 (9.6, 8.8 to 10.4) | 85 (1.6, 1.1 to 2.0) | SB | |||
| <3/60 | |||||
| 222 (4.1, 3.3 to 5.0) | 742 (13.7) | ||||
| 163 (3.0, 2.3 to 3.7) | 666 (12.3) | ||||
| All | 3744 (69.3) | 1069 (19.8) | 370 (6.8) | 222 (4.1) | 5405 (100.0) |
| 4695 (86.9) | 462 (8.5) | 85 (1.6) | 163 (3.0) | 5405 (100.0) | |
NN = normal/near normal; VI = unilateral or bilateral vision impairment; UL = unilateral blindness; MB = moderate bilateral blindness; SB = severe bilateral blindness.
*Data are given as number of people (percentage prevalence, 95% confidence interval). For each pair of numbers, presenting visual acuity is on the top and best corrected visual acuity on the bottom.