visual-righting reflex

Methods Field study was adopted in forty students in a certain hygienic school, whose age were 17 to 18. Observational indicators were as follows: visuognosis persistence, visual-motor reflex time, reading number, error ratio, intellective capacity index.

方法对某卫生学校40名17～18岁学生进行，现场研究，观察指标为明视持久度、视觉运动反应时、阅字数、错误率、脑力工作能力指数。

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Results Difference was not significant in visuognosis persistence, visual-motor reflex time, reading number and intellective capacity index between those with protective filters and without filters study groups ( P> 0.05).

结果操作者明视持久度、反应时、阅字数、脑力工作能力指数四项指标在有屏组与无屏组间比较，无统计学意义（P＞0.05）。

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