Playing with cell phones on the eyes 1, people through the phone to read text information or Internet, the eyes will be closer than holding a book or a newspaper, which means that the eyes focus on the phone graphics more effort, more likely to lead to headaches and double eye fatigue and other problems. 2, long time to see, cause our glasses regulation role continues, the adjustment range decreases, adjust the near point distance significantly increased, the required adjustment time is extended. It is easy to deepen myopia, and also cause eye fatigue and so on will also lead to eye dryness and blurred vision, wear glasses people are more seriously affected. 3, long time use of cell phones to browse the web, blinking action to reduce, causing dry eyes, eye astringency, long-term easy to cause conjunctivitis, keratitis. 4, long time lying down to play cell phone easy to make the blood flow to the eyes, resulting in the eye conjunctiva blood vessels of light congestion, and even induce chronic inflammatory lesions of conjunctival tissue. 5, smart phones are generally large screen, high brightness, above the concentration of too much information, eyes staring at the screen, constantly changing light and shadow will cause continuous stimulation of the eyes, may lead to tear film layer damage. When you look at your cell phone for a long time, the number of transients decreases, especially the number of complete transients, and the opportunity to distribute tears on the corneal surface through the eyelids decreases, while the evaporation of tears from the corneal surface increases, which can lead to dry eyes, itchy eyes, eye pain and other uncomfortable symptoms. In addition, there are even symptoms such as stinging, tearing and photophobia. 6. The occurrence of cataracts due to long time looking at cell phones is gradually showing a younger trend. Cataracts can occur in the early stage of blurred vision, often triggered by environmental changes and excessive eye fatigue, and cell phone radiation is also prone to blurred eyes. Suggestions 1. Keep a distance of about 30 cm between your eyes and your smartphone. 2. The light should not be too strong or too dark, and should come from the left front so that the shadow does not obstruct the vision. 3. The time spent on the phone should not be too long, do not lie down, take a 10-15 minute break every 40-50 minutes, close your eyes or look into the distance for a few minutes. 4, strengthen vision training and adhere to do eye exercises. Especially outdoor sports, in the fresh air, open field of view in the countryside overlooking the beautiful scenery is one of the best eye health care methods. 5. Pay attention to nutritional supplements, especially B vitamins and minerals. Teenagers under the age of 18 are advised not to use smartphones, and it is recommended to choose general cell phones with simple functions and screens.