目的:了解连云港市中小学生视力现状,探讨视力下降的影响因素,做好青少年视力保护和近视防治工作。方法:我们于2009-05/08对连云港市2480例中小学生进行视力、近视情况和相关因素调查,分析不同年级学生视力变化的相关性,分组对照研究家族史、课外阅读、读写姿势不良习惯、上网史等因素对视力的影响。结果:中小学生的年级与视力呈负相关(r=-0.98),年级与近视率呈正相关(r=0.985)。近视组在家族史、读写姿势不良、课外阅读习惯不良等方面高于正常组,与性别比例无相关性。结论:中小学生视力随着年级增高而下降,近视率提高。家族史、课外阅读习惯不良、读写姿势不良和上网习惯是引起视力下降的部分原因,以上因素中,上网已排在首位。

AIM:To learn the current situation of teenagers’ eyesight and discuss the influence factors of vision loss so as so promote the work of better visual acuity protection and myopia prevention in teenagers.METHODS:An investigation on the eyesight,myopia and related factors of 2480 teenagers was conducted in Lianyungang city from May to August in 2009.Different grade student vision changes were analyzed,and family history,reading and surfing harmful habits with grouping antitheses were compared.RESULTS:The grade of the students was negatively correlated with the vision(r=-0.98),while positively correlated with myopia rate(r=0.985).On the aspect of history,reading and surfing harmful habit,the proportion of number in the myopia group was higher than that in the emmetropia group.CONCLUSION:The eyesight of teenagers declines as their grades become higher,while the myopia rate rises.History,reading and surfing harmful habit may be parts of the reasons for visual acuity declining;The unstability of tear films possibly correlates with the myopia rate.Correlation between gender and eyesight was unseen in the survey.Among those influencing factors,surfing harmful habit has ranked the first.

R778.11