Eyes on the computer for a long time, there are two main hazards: First, due to the proximity of the eyes for a long time, will cause eye fatigue symptoms, manifested as eye soreness, dryness, and will appear foreign body sensation, burning sensation, photophobia, tearing, and even dizziness and headache in serious cases. Secondly, the light of the computer screen will affect the fundus of the eye, especially the macular area, especially in a darker environment to the computer, too much time will damage the macular area, leading to macular degeneration. Therefore, in order to avoid the occurrence of this harm, we must pay attention to the reasonable use of the eyes, try not to use the computer for more than four hours a day, each continuous use of time can not exceed one hour, every hour to rest for about 10 minutes, and need to increase the appropriate outdoor time, so as to alleviate the harm brought by the computer to the eyes.