Crude prevalence and age-adjusted and gender-adjusted prevalence of visual impairment (VI)
| Crude prevalence of VI (95% CIs) | Age and gender-adjusted prevalence of VI (95% CIs) | |
| Mild VI | 2.87 (2.41 to 3.40) | 2.37 (2.00 to 2.90) |
| Moderate VI | 4.64 (4.06 to 5.29) | 4.03 (3.50 to 4.64) |
| Severe VI | 0.60 (0.40 to 0.87) | 0.55 (0.35 to 0.80) |
| Blind | 0.69 (0.47 to 0.97) | 0.57 (0.37 to 0.82) |
| All VI | 8.81 (8.01 to 9.67) | 7.51 (6.80 to 8.32) |