日常生活和工作学习中,如果超负荷进行体力活动(如劳动、体育运动等)或脑力劳动(如思考、计算、背诵等),会发生体力疲乏或脑力不支,我们称之为身体疲劳或大脑疲劳。同样,眼睛在持续长时间看近距离东西后,也会出现视物模糊、眼酸胀、干涩、流泪及眼眶痛等症状,甚至可以引起头痛、恶心、乏力等全身不适,我们称之为眼疲劳,临床上又称视疲劳。 眼睛无任何疾病或生理缺陷,仅在过度用眼后才发生的疲劳,属正常生理 In daily life and work study, physical exertion or mental retardation can occur if you are overloaded with physical activities (such as labor, physical exercise, etc.) or mental work (such as thinking, calculating, reciting, etc.), which we call physical fatigue or the brain fatigue. Similarly, the eyes continue to look for things at close range for a long time, there will be blurred vision, soreness, dryness, tears and orbital pain and other symptoms, and even cause headache, nausea, fatigue and other discomfort, which we call the eye Fatigue, also known as visual fatigue. Eyes without any illness or physical defects, fatigue occurs only after excessive use of the eyes, is a normal physiology