Lacrimal sac surgery usually requires a hospital stay of 3 to 5 days, and the exact number of days in the hospital varies as each person’s condition is different. Lacrimal sac surgery is mainly used to treat dacryocystitis, which is a common ophthalmologic disease, mainly caused by the blockage of the tear duct. For acute dacryocystitis, nasal lacrimal sac anastomosis can be performed, and the surgery usually requires about 3 days of hospitalization. In case of chronic dacryocystitis, those with more severe symptoms can take dacryocystectomy, which usually requires about 5 days of hospitalization. However, if the postoperative period is not hygienic and causes infection, the hospitalization time will need to be extended, so it is not possible to generalize the exact number of days in the hospital. If tear duct surgery is needed, patients are advised to go to a local regular hospital and choose the appropriate surgery according to their personal situation. After the surgery, patients should pay attention to hygiene, take more rest and avoid overwork to avoid affecting the recovery of the wound.