Recently, some netizens said that after being infected with COVID-19, they suffered from eye soreness, redness, swelling, tears and even blurred vision. Previously, the latest research results published in Nature Newsletter showed that COVID-19 can cause eye discomfort and retinal inflammation. And the large prospective observation research released by The Lancet also shows that even after vaccination, 24.8% - 27.7% of COVID-19 infected people will still have sore eyes. COVID-19 infection is a systemic disease, not just a respiratory disease. As we all know, aerosol transmission is the main way of COVID-19 transmission. People exposed to COVID-19 aerosol environment may cause eye infection through two ways, causing dry eyes, redness, pain, even blurred vision and other symptoms. "On January 2, Professor Chen Youxin, director of ophthalmology department of Peking Union Medical College Hospital, said in an interview with the reporter of Science and Technology Daily, on the one hand, COVID-19 can directly infect eye tissue through conjunctiva, cornea and other mucous membrane tissues on the surface of the eye; On the other hand, after COVID-19 enters the human body, part of the population will have viremia, which will spread the virus to various tissues of the body such as nervous tissue through blood circulation. Studies have shown that COVID-19 is likely to have eye tropism. In previous animal experiments, some researchers tried to let the virus invade rhesus monkeys by conjunctival inoculation, which induced mild COVID-19 infection symptoms. In addition, 57% of COVID-19 infected people also detected COVID-19 RNA in conjunctival swabs, and the detection rate was higher in people with higher disease severity. Chen Youxin introduced that at present, the proportion of eye infection symptoms after infection with COVID-19 Omikron virus strain is not too high, and conjunctivitis symptoms are more common after eye infection, mainly manifested as dry eyes, soreness, redness, tears, etc., but very few people will have acute macular retinopathy, During fundus examination, the macular area, especially the outer retina and ellipsoidal zone, will be damaged, which will cause blurred vision. In addition, after COVID-19 invades the optic nerve, it will lead to optic neuropathy and visual impairment. Eye surface inflammation can be relieved by eyedrops. "If only the conjunctiva and other ocular surface tissues are dry or other conjunctivitis symptoms appear, you can use some eye drops such as sodium hyaluronate and artificial tears, or you can use some anti-virus eyedrops such as ganciclovir eye drops and non steroidal anti-inflammatory drugs to relieve the symptoms." Chen Youxin said that discomfort of the eye surface generally does not lead to vision loss, However, if there is acute macular retinopathy and other fundus diseases, severe cases may lead to vision damage, which requires high vigilance and active prevention. "After fundus disease occurs, patients will generally be treated with hormone after virus detection turns negative, supplemented by local neurotrophic support and antioxidant protection drugs," Chen Youxin said. In case of blurred vision, you need to go to a doctor in time. Chen Youxin introduced that up to now, there is no drug specifically for COVID-19 eye infection to prevent eye discomfort caused by COVID-19 infection. The most important thing is to strengthen self-protection at ordinary times. "Like going out