Exposure to bright light appears to be protective against myopia in both animals (chicks, monkeys) and children, but quantitative data on human light exposure are limited. In this study, we report on a technique for quantifying light exposure using wearable sensors. Twenty-seven young adult subjects wore a light sensor continuously for two weeks during one of three seasons, and also completed questionnaires about their visual activities. Light data were analyzed with respect to refractive error and season, and the objective sensor data were compared with subjects’ estimates of time spent indoors and outdoors. Subjects’ estimates of time spent indoors and outdoors were in poor agreement with durations reported by the sensor data. The results of questionnaire-based studies of light exposure should thus be interpreted with caution. The role of light in refractive error development should be investigated using multiple methods such as sensors to complement questionnaires.

中文翻译：

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量化年轻成人学生的光照模式


对于动物（小鸡、猴子）和儿童来说，暴露在强光下似乎可以预防近视，但有关人类光暴露的定量数据有限。在这项研究中，我们报告了一种使用可穿戴传感器量化曝光量的技术。二十七名年轻的成年受试者在三个季节之一连续佩戴光传感器两周，并完成了有关他们视觉活动的调查问卷。根据屈光不正和季节对光数据进行分析，并将客观传感器数据与受试者对室内和室外时间的估计进行比较。受试者对室内和室外花费时间的估计与传感器数据报告的持续时间不一致。因此，应谨慎解释基于问卷调查的光暴露研究结果。应使用多种方法（例如传感器）来研究光在屈光不正发展中的作用，以补充问卷。