title: Prevalence of refractive error.
authors.forename: Robert W
authors.initials: RW
authors.lastname: Arnold
mesh_terms: D001741:Black or African American / Q000208:ethnology*; D017677:Age Distribution; D015858:Anisometropia / Q000208:ethnology*; D002648:Child; D002675:Child, Preschool; D006630:Hispanic or Latino / Q000208:ethnology*; D006801:Humans; D006956:Hyperopia / Q000208:ethnology*; D015141:Los Angeles / Q000453:epidemiology; D009216:Myopia / Q000208:ethnology*; D015995:Prevalence; D042262:Retinoscopy; D012307:Risk Factors; D017678:Sex Distribution; D014786:Vision Disorders / Q000208:ethnology*; D014792:Visual Acuity