Table 5

Ireland Eye Study presenting visual acuity in the right eye

Presenting visual acuitynMean logMAR (SD)nMean logMAR (SD)
6–7 years old12–13 years
All7280.01 (0.16)*898−0.07 (0.20)
Boys3770.01 (0.15)†504−0.07 (0.21)†
Girls3510.01 (0.17)394−0.07 (0.19)
White582−0.01 (0.14)‡708−0.07 (0.20)§
Traveller650.08 (0.24)86−0.07 (0.18)
Non-white1460.06 (0.24)104−0.04 (0.22)
Emmetropia5220.00 (0.17)639−0.12 (0.14)
Myopia ≤−0.50 DS240.15 (0.20)¶1790.07 (0.29)¶
Hyperopia ≥+2.00 DS1820.04 (0.16)¶800.03 (0.21)¶
Astigmatism ≥1 DC1400.11 (0.21)¶1430.06 (0.23)¶
  • *Statistically significant difference between age groups (Mann-Whitney U test for comparison of means in non-parametric data).

  • †No statistically significant gender difference (Mann-Whitney U test for comparison of means in non-parametric data).

  • ‡Statistically significant ethnic difference (Kruskal-Wallis test for comparison of means in non-parametric data).

  • §No statistically significant ethnic difference (Kruskal-Wallis test for comparison of means in non-parametric data).

  • ¶Statistically significant difference in presenting vision compared with those without refractive error (Mann-Whitney U test for comparison of means in non-parametric data).

  • DC, dioptre cylinder; DS, dioptre sphere; logMAR, logarithm of the minimum angle of resolution.