Dacryocystitis is an infection of the tear sac (lacrimal sac) in the inner corner of your eye. Tears drain through this sac as they leave your eyes. Infections are usually caused by a blockage in the lacrimal duct that allows bacteria to build up inside the tear sac. Symptoms of acute dacryocystitis include: - Pain - Redness - Swelling in the inner corner of the eye - Watery eyeswelling in the corner of the eye next to the nose - Pus or mucus in the corner of the eye - Fever Symptoms of chronic dacryocystitis are usually milder. You may notice tearing and some discharge from your eye, but little to no swelling. The main treatment for dacryocystitis is antibiotics. These drugs kill the bacteria that caused the infection. To relieve pain and swelling from the infection, hold warm compresses to your eye a few times per day. After the infection clears, you may need a procedure called dacryocystorhinostomy (DCR). This surgery bypasses the blocked duct, usually by removing a nearby bone.