【Objective】 To investigate the current situation of 1 092 preschool children's visual acuity and the prevalence of amblyopia and strabismus,and to provide informations for the prevention and treatment. 【Methods】 A sample of 1 902 chidren (2 804 eyes,4 to 6 years old) selected randomly who were underwent eye examination,including distant visual acuity(VA),best corrected VA(BCVA),ocular alignment,cover test and ocular motility evaluation.Retinoscopy was performed for children with subnormal visual situation to exclude the eye structure disease. 【Result】 Of 1 902 effective examinations,the prevalence of amblyopia and strabismus was 1.8%,2.2% respectively. 【Conclusion】 Strabismus and amblyopia are the frequent causes of visual impairment among preschool children.The results of the study emphasize the needs for early prevention and adequate diagnostic eye care services for preschool children.
Key words
visual acuity /
ocular alignment /
amblyopia /
strabismus /
preschool children
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