Table 1.
Age-gender adjusted prevalence of blindness and VI in study sample and in the population ≥50 years
| Category | Study sample | Population | ||||
|---|---|---|---|---|---|---|
| Males % (95% CI) | Females % (95% CI) | Total % (95% CI) | Males % (95% CI) | Females % (95% CI) | Total % (95% CI) | |
| Blindness | 2.3 (1.5-3.1) | 2.1 (1.4-2.8) | 2.2 (1.6-2.8) | 2.5 (1.7-3.3) | 2.4 (1.7-3.1) | 2.4 (1.9-3.0) |
| SVI | 3.8 (2.6-5.0) | 3.1 (2.1-4.1) | 3.4 (2.6-4.3) | 3.4 (2.2-4.6) | 3.5 (2.5-4.5) | 3.5 (2.6-4.3) |
| MVI | 19.6 (17.6-21.6) | 17.4 (15.3-19.5) | 18.3 (16.8-19.9) | 18.2 (16.2-20.2) | 18.6 (16.5-20.7) | 18.4 (16.9-20.0) |
| EVI | 17.4 (14.5-20.2) | 16.6 (14.7-18.4) | 16.9 (15.1-18.7) | 17.0 (14.1-19.9) | 16.8 (14.9-18.7) | 16.9 (15.1-18.7) |
| Functional low vision | 1.1 (0.5-1.7) | 0.9 (0.5-1.4) | 1.0 (0.6-1.4) | 1.1 (0.5-1.6) | 1.0 (0.6-1.5) | 1.0 (0.6-1.4) |
VI=Visual impairment; SVI=Severe VI; MVI=Moderate VI; EVI=Early VI; CI=Confidence interval