RESUMEN
Objective To learn the refractive status and its influencing factors among preschool children,and to provide evidences for developing intervention measures.Methods Sure sight hand -held auto view tester was used for the screening of refraction.And a questionnaire survey was conducted among the parents of those with ametropia.Influencing factors of ametropia were analyzed.Results Of the 4 534 preschool children,the prevalence of ametropia was 1 0.43%;there was no significant difference (P >0.05)between the boys (1 0.1 3%)and girls (1 0.77%).The prevalence of ametropia including monocular and binocular ametropia significantly decreased with age (P <0.01 ).Hyperopia was the major type of ametropia which accounted for 59.1 4%,and the prevalence significantly decreased with age (P <0.01 ). Family history of eye diseases (OR =3.90,95%CI =2.35 -6.49)and visual abnormality (OR =3.91 ,95%,CI =2.85-5.38)were the risk factors for ametropia,and mother's knowledge of eye care (OR =0.66,95%,CI =0.36 -0.91 ) was the protective factor.The treatment adherence of children with ametropia decreased with time.Conclusion The prevalence of ametropia among preschool children is high.It's urgent to strengthen the cognition of eye care among parents and to pay more attention to the case management of children with ametropia.