After cataract surgery, it is OK for patients to cough slightly, but patients need to avoid frequent and violent coughing, which may lead to ectopic IOLs. Currently, cataract surgery is mostly performed by extracapsular cataract extraction or cataract ultrasonography combined with IOL implantation, etc. Patients should pay attention to eye hygiene to avoid wound infection. After surgery, it is OK for patients to cough slightly, but not violently and frequently, which may lead to ectopic IOLs. If the patient coughs frequently and violently, the pressure in the abdominal cavity will increase, which will lead to IOL displacement, clamping, and even dislocation into the anterior chamber, and also affect the healing of the surgical incision. This may not only affect the patient’s vision after surgery, but may also require a second surgery. If the patient coughs after cataract surgery, cough suppressant medication can be given to treat the symptoms. At the same time, cataract surgery should be well educated, and colds should be avoided before and after the surgery. It is recommended that post-cataract surgery patients follow the doctor’s instructions for care, regular review, and timely consultation when discomfort occurs.