Visual acuity (uncorrected and presenting)
VA (uncorrected) | 6–7-year-olds | 12–13-year-olds | ||
Number | Mean logMAR (SD) | Number | Mean logMAR (SD) | |
Right | ||||
All | 390 | 0.12 (0.12)* | 661 | 0.09 (0.30)* |
Boys | 193 | 0.12 (0.12)† | 334 | 0.07 (0.27)‡ |
Girls | 197 | 0.12 (0.12)† | 327 | 0.12 (0.33)‡ |
Left | ||||
All | 390 | 0.12 (0.15)* | 661 | 0.09 (0.31)* |
Boys | 193 | 0.12 (0.16)† | 334 | 0.06 (0.28)‡ |
Girls | 197 | 0.12 (0.15)† | 327 | 0.13 (0.34)‡ |
Right | ||||
No refractive error | 295 | 0.09 (0.09) | 484 | −0.02 (0.15) |
Myopia≤−0.50DS | 8 | 0.27 (0.24)§ | 99 | 0.58 (0.40)§ |
Hyperopia≥+2.00DS and <+3.00DS | 49 | 0.13 (0.11)¶ | 29 | 0.04 (0.13)¶ |
Hyperopia≥+3.00DS | 38 | 0.25 (0.19)§ | 49 | 0.21 (0.26)§ |
VA (presenting) | ||||
Right | ||||
No refractive error | 295 | 0.09 (0.08) | 484 | −0.02 (0.14) |
Myopia≤−0.50DS | 8 | 0.27 (0.24)§ | 99 | 0.16 (0.22)§ |
Hyperopia≥+2.00DS and <+3.00DS | 49 | 0.12 (0.6)¶ | 29 | 0.02 (0.12)¶ |
Hyperopia≥+3.00DS | 38 | 0.20 (0.12)§ | 49 | 0.10 (0.17)§ |
↵* No statistically significant difference between the two age-groups.
↵† No statistically significant gender differences.
↵‡ Statistically significant gender differences.
↵§ Statistically significant difference in VA compared to children with no refractive error.
↵¶ No statistically significant difference in VA compared to children with no refractive error.