Percentage of disagreement between the two methods, in visual acuity testing, according to number of lines of difference
| No of lines difference | No of cases | % From 290 children | % Underestimation out of 290 children | % Overestimation of 290 children |
|---|---|---|---|---|
| 2 and 3 lines (total) | 25 | 8.6 | 1.7 (5) | 6.9 (20) |
| 2 lines | 20 | 6.9 | 1.4 (4) | 5.5 (16) |
| 3 lines | 5 | 1.7 | 0.3 (1) | 1.4 (4) |