The profile of astigmatism in 6¿12-year-old children in Iran Hassan Hashemi; Amir Asharlous; Mehdi Khabazkhoob; Abbasali Yekta; Mohammad Hassan Emamian; Akbar Fotouhi;

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;