Crude and census-weighted prevalence of vision impairment and blindness among the population aged 35 years and older in the Gambia and its historic regions
| National (n=9188) | Western region (n=5625) | Central region (n=1476) | Eastern region (n=2087) | |||||||||
| Crude | Age and sex standardised (2013 census) | Crude | Age and sex standardised (2013 census | Crude | Age and sex standardised (2013 census) | Crude | Age and sex standardised (2013 census) | |||||
| n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | |
| Vision impairment category* | ||||||||||||
| No vision impairment (≥6/12) | 7861 | 85.6 (84.8 to 86.3) | 86.6 (85.6 to 87.6) | 4804 | 85.4 (84.5 to 86.3) | 86.1 (84.8 to 97.2) | 1210 | 82.0 (79.9 to 83.9) | 83.8 (80.2 to 86.9) | 1847 | 88.5 (87.1 to 89.8) | 89.7 (88.0 to 91.2) |
| Mild (<6/12 and ≥6/18) | 326 | 3.5 (3.2 to 3.9) | 3.3 (3.0 to 3.8) | 215 | 3.8 (3.4 to 4.4) | 3.7 (3.2 to 4.3) | 63 | 4.3 (3.3 to 5.4) | 4.1 (3.0 to 5.6) | 48 | 2.3 (1.7 to 3.1) | 2.0 (1.5 to 2.8) |
| Moderate (<6/18 and ≥6/60) | 726 | 7.9 (7.4 to 8.5) | 7.1 (6.4 to 7.9) | 463 | 8.2 (7.5 to 9.0) | 7.5 (6.6 to 8.5) | 137 | 9.3 (7.9 to 10.9) | 8.3 (6.2 to 11.1) | 126 | 6.0 (5.1 to 7.1) | 5.4 (4.3 to 6.9) |
| Severe (<6/60 and ≥3/60) | 171 | 1.9 (1.6 to 2.2) | 1.8 (1.6 to 2.1) | 87 | 1.5 (1.3 to 1.9) | 1.6 (1.2 to 2.0) | 42 | 2.8 (2.1 to 3.8) | 2.3 (1.6 to 3.3) | 42 | 2.0 (1.5 to 2.7) | 1.9 (1.3 to 2.5) |
| Blind (<3/60) | 104 | 1.1 (0.9 to 1.4) | 1.2 (0.9 to 1.4) | 56 | 1.0 (0.8 to 1.3) | 1.2 (0.9 to 1.6) | 24 | 1.6 (1.1 to 2.4) | 1.4 (0.9 to 2.3) | 24 | 1.1 (0.8 to 1.7) | 1.0 (0.6 to 1.5) |
| <3/60 to ≥1/60 | 52 | 0.6 (0.4 to 0.7) | 0.6 (0.4 to 0.8) | 29 | 0.5 (0.4 to 0.7) | 0.6 (0.4 to 0.9) | 14 | 0.9 (0.6 to 0.2) | 0.8 (0.4 to 0.2) | 9 | 0.4 (0.2 to 0.8) | 0.4 (0.2 to 0.8) |
| <1/60 to light perception | 36 | 0.4 (0.3 to 0.5) | 0.4 (0.3 to 0.6) | 17 | 0.3 (0.2 to 0.5) | 0.3 (0.2 to 0.6) | 8 | 0.5 (0.3 to 1.1) | 0.5 (0.2 to 1.1) | 11 | 0.5 (0.3 to 0.9) | 0.4 (0.2 to 0.8) |
| No light perception | 16 | 0.2 (0.1 to 0.3) | 0.2 (0.1 to 0.3) | 10 | 0.2 (0.1 to 0.3) | 0.2 (0.1 to 0.4) | 2 | 0.1 (0.0 to 0.5) | 0.1 (0.0 to 0.3) | 4 | 0.2 (0.1 to 0.5) | 0.2 (0.1 to 0.5) |
| Any VI (<6/12) | 1327 | 14.4 (13.7 to 15.2) | 13.4 (12.4 to 14.4) | 821 | 14.6 (13.7 to 15.5) | 13.9 (12.8 to 15.2) | 266 | 18.0 (16.1 to 20.1) | 16.2 (13.1 to 19.8) | 240 | 11.5 (10.2 to 12.9) | 10.3 (8.8 to 12.0) |
| Moderate-to-severe VI (<6/18 and ≥3/60) | 897 | 9.8 (9.2 to 10.4) | 8.9 (8.1 to 9.7) | 550 | 9.8 (9.0 to 10.6) | 9.1 (8.1 to 10.1) | 179 | 12.1 (10.6 to 13.9) | 10.6 (8.2 to 13.8) | 168 | 8.1 (7.0 to 9.3) | 8.9 (8.1 to 9.7) |
*WHO ICD-11 categorisation, based on presenting distance visual acuity in better eye.34
VI, vision impairment.