Daily life cell phone has become an indispensable tool, people can use it to communicate, study, work, entertainment and so on, cell phones have brought a lot of convenience, but also to the eye has brought a lot of problems, many people look at the phone eye pain is one of them, the reasons for the following general: 1, dry eye sex: long time to look at the phone gaze at the screen, blinking times reduced, the eye lack of intraocular lubricant tears The eye is exposed to air for a long time, tear evaporation increases, resulting in dry eyes, pain and discomfort. 2.Glaucoma: If the eyes have eye pain, increased eye pressure, photophobia and accompanied by nausea and vomiting, it is possible that the eye pain is caused by glaucoma. 3, visual dysfunction: refractive error and adjustment ability decline, refractive disparity, should go to do a little optometry. 4, visual fatigue: along with headache, eye pain, eye congestion, headache, easy to tear, feeling afraid of light when looking at things and other symptoms may be eye pain caused by visual fatigue, must pay attention to rest both eyes in between looking at the phone, so as not to cause visual fatigue, eye pain. 5. High eye pressure: When the eye pressure is high, looking at the cell phone screen and so on can cause eye pain. In summary, the above-mentioned situations can cause eye pain when looking at the phone, it is recommended to go to the hospital ophthalmology in a timely manner to do a checkup of all aspects of the eyes, so as not to delay the disease, which may be the symptoms of dry eye, glaucoma and other diseases, some diseases are irreversible damage to the eyes, it is recommended to seek medical examination and treatment in a timely manner.