Prevalence of refractive error within a Portuguese sample of optometric records 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;

Mean cycloplegic refractive error in emmetropic adults ¿ The Tehran Eye Study Jos J. Rozema; Rafael Iribarren; Hassan Hashemi; Mehdi Khabazkhoob; Akbar Fotouhi;