连云港市中小学生视力低下动态分析与预测

目的：研究中小学生视力低下的发生发展规律，为预防和控制中小学生视力低下提供依据。方法：对1992～1997年连云港币中小学生视力低下进行动态分析。结果：重点中小学学生视力低下率高于普通中小学学生，并呈逐年上升趋势。用灰色系统理论的方法进行预测，今后数年重点中小学学生视力低下车仍将持续上升，普通中小学学生视力低下率趋于平稳。结论：视力低下的防治仍然是今后若干年学校卫生工作的重点。

Dynamic Analysis and Prediction of Poor Sight among Primary and Secondary School Students in Lianyungang

Objective: In order to study the Pathogenesis of poor sight and provide the basis for the prevention of opr sight in primary and arendare school students. Methods: A longitudinal study was conducted on the prevalence of poor sight among primary and secondary sehool students in Lianyungang from 1992 to 1997. Results: The prevalence rate of poor sight among the key primary and secondary school students was higher than that among the ordinary primary and secondary school students, this difference inceased year by year. It was predicted by the thecory of Grey system that the prevalencc rate of poor sight would increased continually among the key primary and secodary school students while it would present a stable tendency among the ordinary primary and secondary school students. Conclusions: The prevention and treatment of poor sight will still be the foacl point of school health work in the coming years.