Tideman JWL, et al. - A prospective population-based birth cohort study is done to analyze whether differences in myopia prevalences in socioeconomic risk groups could be clarified by differences in lifestyle factors. This study observed environmental factors to be strong risk factors for myopia already at the age of 6 years. The myopia prevalence differences in socioeconomic groups were greatly determined by differences in the distribution of these environmental risk factors, featuring the significance of lifestyle adjustments in young children developing myopia.