Table 2.
Visual status of study subjects
| Vision | Number of subjects | % (95% CI) |
| Normal | 325 | 67.7 (63.3 to 71.8) |
| Visual impairment | 69 | 14.4 (11.4 to 17.9) |
| Severe visual impairment | 36 | 7.5 (5.4 to 10.3) |
| Blind | 50 | 10.4 (7.9 to 13.6) |
| Total | 480 | 100 |
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