Inal, Asli Comparison of visual acuity measurements via three different methods in preschool children: Lea symbols, crowded Lea symbols, Snellen E chart. [electronic resource] - International ophthalmology Aug 2018 - 1385-1391 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1573-2630 Standard No.: 10.1007/s10792-017-0596-1 doi Subjects--Topical Terms: Amblyopia--diagnosisChildChild, PreschoolCross-Sectional StudiesFemaleFollow-Up StudiesHumansMaleRefraction, Ocular--physiologyRefractive Errors--diagnosisReproducibility of ResultsRetrospective StudiesTime FactorsVision Tests--methodsVisual Acuity