Numbers of children with a refractive error, and the type, in the SN and LD groups
| Refractive errors | SN (n=228), n (%) | LD (n=172), n (%) |
|---|---|---|
| Myopia | 22 (9.6) | 17 (9.9) |
| Hyperopia | 52 (22.8) | 44 (25.6) |
| Astigmatism | 73 (32) | 55 (32) |
LD, learning disability; SN, special needs.