Redness of the eyes after vaccination is generally not normal and is often considered to be caused by an allergic reaction. If there is redness in the eyes after receiving the New Crown vaccine, it is considered that the New Crown vaccine-related rejection reaction causes allergy, and should be closely observed for bleeding, eye swelling and pain, and other discomforts. If not, the condition should be closely monitored and the redness will subside in 1~2 days. If the redness and swelling do not subside, please consult a doctor promptly. It should also be closely monitored for any serious adverse reactions such as fever and difficulty in breathing, and seek prompt medical attention if any of these symptoms occur. If the redness of the eyes does not subside for a long time, it is recommended that you should seek medical treatment promptly.