The equations of ametropia: Predicting myopia Francisco Gaya; Antonio Medina;

Prevalence of refractive error within a Portuguese sample of optometric records Vera Lúcia Alves Carneiro; José Manuel González-Méijome;

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