Refraction (diopter) cutoff of boys compared with that of girls at different age and centile using population-based data of the Guangzhou Refractive Error Study in Children (RESC) study.

Refraction (diopter) cutoff of boys compared with that of girls at different age and centile using population-based data of the Guangzhou Refractive Error Study in Children (RESC) study.</p

Distribution of age-specific spherical equivalent at baseline and classification of future high myopia onset at 15 years old among first-born twins.

<p>A for boys, B for girls. * Centile curves were the ones constructed based on cross-sectional data.</p

The accuracy of baseline centiles to estimate refractive status at the age of 15 years in first-born twins ^*.

<p>The accuracy of baseline centiles to estimate refractive status at the age of 15 years in first-born twins ^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0167642#t002fn001" target="_blank">*</a>}.</p

Percentile curves for urban Chinese boys based on cross-sectional data.

<p>Percentile curves for urban Chinese boys based on cross-sectional data.</p

The accuracy of baseline centiles to identify first-born twins with high myopia (SE ≤-6.0D) at the age of 15 years by sex.

<p>The accuracy of baseline centiles to identify first-born twins with high myopia (SE ≤-6.0D) at the age of 15 years by sex.</p

Percentile curves for urban Chinese girls based on cross-sectional data.

<p>Percentile curves for urban Chinese girls based on cross-sectional data.</p

Distribution of refractive error in Korean adults in Korean representative population.

<p>Distribution was presented according to the age groups, and compared with those of previous studies for Korean 19 years old population in Seoul and Jeju. </p

Comparison of prevalence of myopia in Korean National Health and Nutritional Examination Survey (NHANES) with U.S NHANES (Vitale et. al., Prevalence of refractive errors in United States, Archives Ophthalmology 2008).

<p>Comparison of prevalence of myopia in Korean National Health and Nutritional Examination Survey (NHANES) with U.S NHANES (Vitale et. al., Prevalence of refractive errors in United States, Archives Ophthalmology 2008).</p

Prevalence of myopia (<-0.5 Diopters [D]) and high myopia (<-6.0 D) in Korean adults in Korean representative population.

<p>Prevalence was presented according to the age groups, and compared with those of previous studies for Korean 19 years old population in Seoul and Jeju.</p

Logistic regression model of possible predictors of myopia < = -0.5D (Both eyes of all children are included, with the correlation between eyes adjusted for using multilevel logistic models.

<p>*All potential predictors were included in the multiple regression model.</p><p>CHSQ = Children Sleep Habits Questionnaire</p><p>Logistic regression model of possible predictors of myopia < = -0.5D (Both eyes of all children are included, with the correlation between eyes adjusted for using multilevel logistic models.</p