自从小明家买了电脑,他每天都玩游戏,尤其放假时他几乎整天都是坐在电脑前。开学后,他总觉得眼干、看东西不清楚,点了一些眼药水也不见效。到医院就诊,医生诊断为干眼症。那么,什么是干眼症呢?人总在眨眼,这是一种保护性动作,可以使泪水均匀地涂在角膜和结膜表面,以保持润湿而不干燥。正常人每分钟眨眼约20次,若次数减少10次左右,眼睛仍可维持泪液层的完整。倘若长时间睁眼凝视变动的 Since Xiaoming bought a computer, he played games every day, especially on holidays when he was sitting in front of the computer. After school, he always felt dry eyes, see things is not clear, point some eye drops are not effective. To the hospital, the doctor diagnosed as dry eye. So, what is dry eye? People always blink, this is a protective action, you can make the tears evenly coated on the cornea and conjunctiva surface, in order to keep wet without drying. Normal people blink about 20 times per minute, if the number of times to reduce about 10 times, the eye can still maintain the integrity of the tear layer. If long time staring eyes change