Q您好,近段时间上课的时候我老觉得眼睛看黑板很吃力,看书写作业时间稍长一点就看不清楚了。眼睛总发酸并且有微痛,滴眼药水也没用。请问对于视疲劳,我平时该如何防治呢?A近几年视疲劳在学生中的发病率呈急剧上升趋势。引起青少年视疲劳的原因主要有长时间过度用眼、长期 Q Hello, when I was in class recently, I often find it hard to look at the blackboard. It is not clear when I read a job for a longer time. Eyes always sour and a slight pain, eye drops are useless. As for visual fatigue, how do I usually prevent it? A, the incidence of visual fatigue in students in recent years showed a sharp upward trend. Causes of visual fatigue as a teenager mainly for a long time with the eyes, long-term