Cataract surgery usually requires about three days of hospitalization. Cataracts are a common ophthalmic disease, usually caused by aging, the transparency of the lens inside the eyeball decreases, leading to the symptoms of vision loss, in addition to eye trauma or long-term use of hormone drugs and other reasons may also cause cataracts. Cataracts are usually treated with surgery, which usually involves a hospital stay of about three days. On the first day of hospitalization, the patient will undergo pre-surgical examinations, such as measurement of IOLs, blood tests, coagulation tests, etc. On the second day, the patient can be scheduled for surgery if the pre-surgical examinations are normal, and on the third day, the patient will undergo a review, and can be discharged from the hospital if he/she has recovered well after the surgery. Specific hospitalization time may also vary due to the patient’s own underlying diseases, postoperative recovery results, etc. Patients should also pay attention to strictly maintain eye hygiene after discharge, avoid eye trauma, do not let dirty water into the eyes, so as to avoid eye infections. It is recommended that patients go to the ophthalmology department of a regular hospital for consultation and follow the doctor’s instructions for treatment.