What are the postoperative complications of surgery for dacryocystitis?

　　Possible complications of dacryocystitis surgery include recurrent infection, tear duct narrowing or obstruction, ocular scarring, eyelid swelling and bruising, and persistent epiphora (excessive tearing). Most of these are related to surgical technique, postoperative care, or individual patient factors. If persistent pain, pus discharge, or vision abnormalities occur after surgery, prompt medical attention is recommended.

　　1. Recurrent infection: Inadequate postoperative hygiene or decreased immunity may lead to re-infection of the lacrimal sac, causing symptoms such as redness, swelling, pain, and purulent discharge. Timely intervention is necessary to prevent the spread of inflammation.

　　2. Tear duct narrowing or obstruction: Injury to the tear duct mucosa during surgery or postoperative scar tissue formation may result in narrowing or complete blockage of the tear duct, worsening epiphora. This may require correction through dilation procedures or revision surgery.

　　3. Ocular scarring: Minor external scarring may remain after incision healing, or internal scar tissue may contract and pull on the eyelid, affecting appearance. Individuals with a predisposition to keloid or hypertrophic scarring are at higher risk.

　　4. Eyelid swelling and bruising: Impaired local blood circulation after surgery may cause eyelid swelling and subcutaneous bruising. These typically resolve gradually, although in some cases they may persist longer or be more pronounced.

　　5. Persistent epiphora: Some patients may continue to experience mild tearing after surgery, often due to incomplete recovery of tear duct function or coexisting eye conditions, requiring further evaluation and management.

　　Postoperative care includes keeping the eye area clean and dry, avoiding pressure on the lacrimal sac area; strictly following prescribed anti-inflammatory medication regimens and attending regular follow-up visits; avoiding strenuous physical activity and eye trauma; and maintaining a light, non-spicy diet to support healing of ocular tissues.