Tranexamic acid, also known as transaminic acid, hemostatic cyclic acid, hemostatic cyclic acid, and clotting acid, is an antifibrinolytic hemostatic agent that is commonly used in the treatment of various types of bleeding. Adverse effects are relatively rare, with occasional bleeding caused by drug overdose, in addition to diarrhea, nausea, vomiting, and, rarely, menstrual discomfort and blood clotting. Since this product can enter the cerebrospinal fluid, some patients have central nervous system symptoms such as blurred vision, headache, dizziness, and fatigue after injection, which are related to the speed of injection, but it is rare that those who continue to apply this product for a long time can have ophthalmic examination and monitoring. Serious adverse reactions include anaphylactic shock, so patients should be closely observed for adverse reactions, and if there is an adverse reaction, the drug should be stopped immediately to give symptomatic treatment.