MyopiaPrevalenceMyopia, DegenerativeRefraction, OcularEyeglassesHyperopiaRefractive ErrorsSensory DeprivationEyeAccommodation, OcularAxial Length, EyeScleraTupaiidaeCross-Sectional StudiesRetinoscopyRisk FactorsEmmetropiaBiometryAstigmatismTupaiaLasers, ExcimerVisual AcuityPhotorefractive KeratectomyAge DistributionKeratomileusis, Laser In SituContact LensesSex DistributionLensesKeratotomy, RadialSingaporeAge FactorsAsian Continental Ancestry GroupQuestionnairesCorneal TopographyChinaCorneaOrthokeratologic ProceduresSex FactorsBrazilHealth SurveysUrban PopulationVitreous BodyUnited StatesRural PopulationAnterior ChamberIndiaGenotypeAnisometropiaRetrospective StudiesSocioeconomic FactorsMydriaticsLogistic ModelsKeratectomy, Subepithelial, Laser-AssistedRefractive Surgical ProceduresCohort StudiesIncidenceProspective StudiesEthnic GroupsOdds RatioCase-Control StudiesInfant, NewbornFollow-Up StudiesSmokingBody Weights and MeasuresSeverity of Illness Index