Fig. 2From: Vision status of children aged 7–15 years referred from school vision screening in Norway during 2003–2013: a retrospective studyScatterplot showing right-eye spherical refractive errors (SER RE) in dioptres (D) for each age group (2nd, 5th, and 10th grades) as a function of time for each year in 2003–2013. Points show individual children (several overlap), and lines show fitted linear regression linesBack to article page