Objective To investigate the refractive status in teenagers in the Minhang District of Shanghai,so as to provide reference for the development of prevention and treatment strategies of children's eye diseases in Shanghai. Methods A cross-sectional study was conducted. From March to September 2019,a total of 15 590 teenagers from 14 schools in Minhang district of Shanghai were selected into this study and took visual examinations,including visual acuity measurement(standard logarithmic visual acuity chart),auto refraction and ocular health examination. Results Finally 15 527 teenagers successfully completed their vision screening. There were 8 230 boys and 7 297 girls. The prevalence rate of uncorrected visual acuity ≤4.7 in both eyes was 21.62%(3 357/15 527),with the wearing glasses rate of 65.68%(2 205/3 357). The prevalence rates of myopia,high myopia and astigmatism in girls(44.65%,3.00%,24.80%) were higher than those in boys(39.81%,2.26%,23.17%). In addition,with the increase of age,the prevalence of myopia and high myopia gradually increased(χ2=1 962.095,787.617,P<0.05). Logistic regression analysis showed that myopia was associated with age(OR=1.339,95%CI:1.321—1.358,P＜0.001) and female(OR=1.230,95%CI:1.149—1.317,P＜0.001). Conclusions Teenagers in Minhang district of Shanghai have a high prevalence of refractive error. The prevalence of myopia and high myopia is associated with age and female. However,longitudinal studies are warranted to evaluate refractive changes over time in individual children,and related measures should be carried out to prevent the development of myopia.
Key words
visual acuity /
refractive errors /
myopia /
high myopia /
teenagers
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