Prevalence of refractive error in Portugal ¿ A systematic review and meta-analysis Vera Lúcia Alves Carneiro; José Manuel González-Méijome;

The prevalence of refractive errors in college students in Israel Einat Shneor; Ravid Doron; Lisa A Ostrin; Ariela Gordon-Shaag;

Using electronic medical record data to establish and monitor the distribution of refractive errors, Seán Longwill; Michael Moore; Daniel Ian Flitcroft; James Loughman;