title: Accuracy and reproducibility of the ETDRS visual acuity chart: methodological issues.
authors.affiliation: Safety Promotion and Injury Prevention Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. s.sabour@sbmu.ac.ir.|Department of Clinical Epidemiology, School of Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran. s.sabour@sbmu.ac.ir.
authors.forename: Siamak
authors.initials: S
authors.lastname: Sabour
authors.affiliation: Department of Retina & Ocular Oncology, School of Medicine, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Fariba
authors.initials: F
authors.lastname: Ghassemi
mesh_terms: D006801:Humans; D015203:Reproducibility of Results; D014787:Vision Tests; D014792:Visual Acuity