What are the main hazards of cell phones to the eyes? Many patients who come to our professional dry eye clinic complain of “dry eyes, swollen eyes, grinding eyes” and so on. These patients usually have red eyes, burning sensation, soreness, photophobia, fear of smoke, wind blowing, etc. Serious cases even have blurred vision and vision loss. When people use cell phones, because of too much concentration, the number of blinks per minute is reduced, plus the light of the cell phone screen after the lights are turned off is more blinding, resulting in the eye surface tear touch can not be evenly distributed, tear evaporation is too strong, the eye surface is not able to lock moisture, more serious tear touch loss leads to the loss of epithelium with barrier function on the surface of the cornea. The long-term existence of such a situation will lead to the occurrence of “dry eye”, serious vision loss, affecting visual function. Can playing with a cell phone in the dark cause glaucoma? It is more common to see that using your eyes in dim light will cause the pupil to dilate for a long time, blocking the circulation of fluid in the eye, which can easily lead to the occurrence of glaucoma and even permanent blindness. So is it true that this can cause this condition? This possibility should not be ruled out. However, if there is a family history of glaucoma, or if there is a diagnosis of suspected glaucoma, then it is likely to lead to glaucoma attacks. Those without these characteristics will not cause glaucoma to occur. In addition, long-term gaze at the electronic screen is likely to cause eye fatigue, refractive error, adolescents are prone to myopia deepening. Intense light stimulation on the fundus retina, macula has an impact on this everyone has been recognized (naked eye to see the eclipse caused by macular degeneration) that long-term cell phone high bright stimulation will cause macular degeneration, is not yet known. In short, playing with cell phones after turning off the lights is still quite harmful, with myopia, dry eye, glaucoma attacks, visual fatigue and macular damage. Parents in order to children do not lose in the starting line, give early education, buy a variety of electronic products to educate children, in fact, one is to affect the child’s language development, the second is easy to lead to the formation of myopia, the third is the formation of incurable dry eye disease. It is recommended that parents and children develop good eye habits and avoid excessive eye use in general. If you find abnormalities such as decreased eye vision, eye pain and eye swelling, it is best to go to an eye specialist as soon as possible to determine whether there is dry eye, myopia and other diseases, and give professional treatment.