Abstract
Objective To survey the visual situation of primary school students in Chongqing city,and to explore the influence factors of myopia.Methods A cross-sectional survey was conducted to select 1100 students in primary school in 3 districts of Chongqing with a multistage cluster randomized sampling method.The student was investigated by questionnaires and the myopia was examined.Results The myopia prevalence of the primary school students in Chongqing city was 32.91% (362/1100) (95% CI:30.13%-35.69%).This rate increased from 9.84% (18/183) in 7-year-old to 59.20% (74/125) in 12-year-old.With increasing age,the prevalence of myopia among males and females showed an increasing trend with age (male:x2=76.457,P=0.000; female:x2=43.815,P =0.000).The myopia rate of the female 33.01% (169/512) was higher than the male 32.82% (193/588) and this difference did not reach statistical significant (x2=0.004,P =0.948).Myopia was related to parents' myopia,parents' level of education,short range reading,reading in bed,playing small games and whether watching television.Conclusions There is a high prevalence of myopia in Chongqing city.It is necessary to take comprehensive measures to preserve eyesight,such as,focusing on the students whose parents are shortsighted and highly educated,and building the self-control to correct bad behavior of reading,strengthening the physical exercises,reducing the frequency of playing games,enriching their after school life and so on. Key words: Myopia ; Risk factor ; Primary student ;
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