It is mainly due to an acute purulent inflammation of the sebaceous and lid glands caused by bacterial infection. The main symptoms are as follows, such as redness around the eyelids, fever around the eyes, severe pain in the eyes, swelling of the surrounding conjunctiva, increased discharge from the eyes, and in severe cases, enlargement of the adjacent lymph nodes, and even generalized fever and chills. The main thing is to do a slit lamp examination to observe the local changes in the glasses, and further blood tests are needed to observe the rise of infection indicators in case of chills and fever, in order to guide the use of medication. The treatment for mydriasis is mainly localized and surgical, mainly anti-infective treatment with antibiotic drops and antibiotic ointment, and surgical treatment only after abscess formation with incision and drainage. To sum up, the treatment of mydriasis mainly needs to be based on the patient’s specific situation and cooperate with the doctor’s treatment so that the best results can be achieved.