Prevalence of visual impairment, low vision, and blindness by sex and age based on presenting visual acuity*
| Age (years) | No | Visual impairment† | Low vision† | Blindness† | |
|---|---|---|---|---|---|
| *Age and sex standardised to the 1996 Tehran population. | |||||
| †Percentage (95% CI). | |||||
| ‡Data on visual acuity not available for five participants. | |||||
| Men | |||||
| 1–19 | 812 | 0.78 (0.16 to 1.40) | 0.78 (0.16 to 1.40) | 0 | |
| 20–39 | 492 | 1.46 (0.47 to 2.45) | 1.28 (0.35 to 2.21) | 0.18 (0.03 to 1.30) | |
| 40–59 | 394 | 1.43 (0.29 to 2.58) | 1.00 (0.37 to 2.70) | 0.43 (0.11 to 1.73) | |
| 60+ | 207 | 17.04 (11.93 to 22.16) | 13.78 (9.46 to 18.10) | 3.26 (0.89 to 5.63) | |
| Women | |||||
| 1–19 | 901 | 0.38 (0.12 to 1.19) | 0.38 (0.12 to 1.19) | 0 | |
| 20–39 | 923 | 0.75 (0.20 to 1.30) | 0.75 (0.20 to 1.30) | 0 | |
| 40–59 | 653 | 3.69 (2.26 to 5.12) | 2.92 (1.61 to 4.23) | 0.77 (0.10 to 1.43) | |
| 60+ | 178 | 23.25 (17.04–29.46) | 19.39 (13.42 to 25.35) | 3.86 (1.09 to 6.64) | |
| Men and women | |||||
| 1–19 | 1713 | 0.58 (0.21 to 0.96) | 0.58 (0.21 to 0.96) | 0 | |
| 20–39 | 1415 | 1.11 (0.56 to 1.67) | 1.02 (0.49 to 1.55) | 0.09 (0.01 to 0.67) | |
| 40–59 | 1047 | 2.51 (1.54 to 3.48) | 1.92 (1.03 to 2.81) | 0.59 (0.15 to 1.03) | |
| 60+ | 385 | 19.98 (15.62–24.33) | 16.43 (12.58 to 20.29) | 3.55 (1.77 to 5.32) | |
| All ages | |||||
| Men | 1905 | 2.35 (1.74 to 2.97) | 1.97 (1.41 to 2.53) | 0.38 (0.13 to 0.64) | |
| Women | 2655 | 2.70 (2.08 to 3.32) | 2.29 (1.70 to 2.89) | 0.41 (0.18 to 0.63) | |
| All participants | 4560‡ | 2.52 (2.07 to 2.97) | 2.13 (1.71 to 2.55) | 0.39 (0.23 to 0.56) | |