Table 1 WHO category of vision of the children in special schools.
WHO category | Visual acuity (logMAR) | N | % | |
|---|---|---|---|---|
0 | No visual impairment | VA ≤ 0.3 | 387 | 87.8 |
1 | Mild impairment | 0.5 ≤ VA < 0.3 | 40 | 9.1 |
2 | Moderate visual impairment | 1.0 ≤ VA < 0.5 | 4 | 0.9 |
9 | Undetermined or unspecified | 10 | 2.3 | |
Total | 441 | 100 |
