Some hospitals do not require hospitalization for cataract treatment, but if the patient’s condition requires it, the patient can be hospitalized for treatment, usually for 3 to 7 days, the specific hospitalization time is related to the patient’s condition. Cataract is a disease caused by the clouding of the lens, and the clouding to a certain extent will seriously affect the patient’s vision. Generally speaking, if the patient’s vision is below 0.3 or affects his/her daily work, study and life, surgery should be considered. Surgery is the main treatment for cataracts, and if the condition requires it, the patient is usually hospitalized for 3 to 7 days. If the patient does not develop an infection after surgery and recovers well, he or she can basically be discharged from the hospital in 3 days. If infection occurs after surgery, or causes other complications, hospitalization may need to be extended. It is recommended that cataract patients seek timely medical attention to assess their condition and follow the doctor’s instructions to choose the appropriate treatment.