Prevalence of low vision and blindness stratified by age groups
| Low vision | Blindness | Total | ||||||||
| N | Rate, % (95% CI) | MVI | SVI | N | Rate, % (95% CI) | N | Rate, % (95% CI) | |||
| N | Rate, % (95% CI) | N | Rate, % (95% CI) | |||||||
| Age group | ||||||||||
| 50–59 | 25 | 1.7 (1.0 to 2.3) | 21 | 1.4 (0.8 to 2.0) | 4 | 0.3 (0 to 0.5) | 6 | 0.4 (0.1 to 0.7) | 31 | 2.1 (1.4 to 2.8) |
| 60–69 | 69 | 3.8 (2.9 to 4.7) | 59 | 3.3 (2.4 to 4.1) | 10 | 0.6 (0.2 to 0.9) | 14 | 0.8 (0.4 to 1.2) | 83 | 4.6 (3.6 to 5.6) |
| 70–79 | 92 | 20.2 (16.5 to 23.9) | 81 | 17.8 (14.3 to 21.3) | 11 | 2.4 (1.0 to 3.8) | 15 | 3.3 (1.7 to 4.9) | 107 | 23.5 (19.6 to 27.4) |
| ≥80 | 40 | 16.3 (11.7 to 21.0) | 32 | 13.1 (8.8 to 17.3) | 8 | 3.3 (1.0 to 5.5) | 8 | 3.3 (1.0 to 5.5) | 48 | 19.6 (14.6 to 24.6) |
| Total | 226 | 5.7 (5.0 to 6.4) | 193 | 4.8 (4.2 to 5.5) | 33 | 0.8 (0.5 to 1.1) | 43 | 1.1 (0.8 to 1.4) | 269 | 6.8 (6.0 to 7.5) |
| Age-standardised prevalence* | 6.3 (5.5 to 7.2) | 5.4 (4.6 to 6.3) | 0.9 (0.6 to 1.3) | 1.2 (0.8 to 1.6) | 7.4 (6.5 to 8.5) | |||||
*Age standardised to the 2010 Population Census of the People’s Republic of China.
MVI, moderate visual impairment; SVI, severe visual impairment.