BMJ · 1960 · 191 citations · 0 references
Health ProfessionsOphthalmologyOptometryClinical OptometryOcular AnatomyVisual PerceptionAge-related Refractive ChangeRefractive DevelopmentRefractive ErrorRefractive Error AssessmentVisual AcuityVisual ImpairmentAge-specific RefractionMonocular Visual AcuityReduced Visual AcuityRefractionStatic Visual AcuityVisual Acuity GainsVisual Acuity Impairment