户外活动近年来被发现与近视的发生发展有关[1-3],有望成为控制学龄儿童近视的一种简便易行的方法[4]。户外活动的测量目前多通过问卷调查来获得,如何设计出高质量的调查问卷仍是研究中亟待解决的难点。澳大利亚“悉尼儿童眼病研究”中采用了一种比较详细的新的户外活动调查问卷[1]。该研 Outdoor activities in recent years have been found related to the occurrence and development of myopia [1-3], is expected to become a simple and easy way to control myopia in school-age children [4]. At present, the measurement of outdoor activities is mostly obtained through the questionnaire survey. How to design a high-quality questionnaire is still a difficult problem to be solved urgently in the research. A more detailed and new survey of outdoor activities was used in the Australian study Sydney Eye for Children [1]. The research