Spring or fall is a good time for viral diseases, and the strongest infectious disease in ophthalmology is “pink eye”, which is a legal category C infectious disease called epidemic hemorrhagic conjunctivitis or acute hemorrhagic conjunctivitis. The diagnosis of this disease is not difficult, as the acute redness of the eyes and the presence of subconjunctival hemorrhage can be determined, especially during the epidemic period, when people around the disease develop one after another. The onset of pink eye is very fast, and many patients often go to bed at night when they are still fine, and wake up to find red, grinding pain in their eyes; or go out in the morning when they are still fine, and come back in the evening with red, teary eyes. Red eye usually develops successively in both eyes, with one eye first showing redness, tearing and foreign body sensation, followed by aggravation, photophobia, pain and swelling of the eyes, etc. Severe cases can be accompanied by swollen lymph nodes in front of the ear, chills and fever, etc. Some people with obvious corneal damage will also have blurred vision. After a few days, there is an increase in secretion but a decrease in tearing, and patients without complications will gradually recover. Those who secrete a lot at an early stage basically suffer from chronic conjunctivitis in general, and red eyes work together with acute attacks of chronic conjunctivitis. After the onset of one eye, the same lesion will appear in the other eye within three or five days. The treatment of red eye is mainly localized and the key is to prevent infection and avoid complications. Because red eye is self-healing, as long as the body is usually okay and the eye has not been inflamed it is easy to get through. Moreover, red eye is a viral infection and the effect of antiviral drugs is not ideal. So many people in the red-eye epidemic want to prevent it by drops of eye drops that are futile, some people instead because drops of eye drops do not pay attention to hygiene also contracted this disease. After the disease, in addition to drops of antiviral eye drops, you can also add inexpensive old medicine – eye drops of rifampin to prevent infection. In addition, what oral medication, and even intravenous infusion for the general public do not need. The medication does not shorten the course of the disease, it is all just to prevent and control complications! For red eye, prevention is far more important than cure. The disease is spread by contact, not paying attention to hygiene, and dirt isolation measures are not done is a key factor in the disease. Pay attention to hand hygiene, do not rub your eyes, go to public places less, enhance physical fitness, reasonable diet, do these is very difficult to be infected.