After cataract surgery, the main contraindications are that the eyes should not be subjected to external impact and should not be contaminated. Cataracts usually require surgical treatment to restore vision. After surgery, patients must pay attention to not letting their eyes be impacted by external forces, not rubbing their eyes, and avoiding trauma to the eyes, so as not to cause the surgical incision to split or dislocation of the implanted IOLs inside the eyeball. If the eyes are contaminated after the surgery, there is a possibility of eye infection, and if it causes endophthalmitis it will seriously affect the vision. Patients must avoid dirty water getting into the eyes when washing hair or face, not letting dust, hair and other foreign objects enter the eyes, and not touching the eyes with dirty hands. In addition, it is also necessary to avoid prolonged use of the eyes, avoid strenuous exercise and lifting heavy objects, and avoid holding your breath and coughing violently.