(1) Chronic dacryocystitis always has tears, and purulent secretions are attached around the corners of the eyes. When the corner of the eye is pressed, pus will flow out from the tear point. This is because the nasolacrimal duct is blocked, and bacteria enter the lacrimal sac during the continuous overflow of tears.

To treat chronic dacryocystitis, antibiotics and disinfectants can be used to wash the lacrimal sac. If it fails, surgery should be taken to remove lacrimal sac or dacryocystostomy. Chronic dacryocystitis, if left unchecked, will not only cause acute dacryocystitis, but also cause corneal ulcer and blindness when the cornea is injured.

(2) Acute dacryocystitis mostly occurs on the basis of chronic dacryocystitis. Bacteria invade the tissues around dacryocystitis through the lacrimal sac wall, causing acute inflammation, severe pain and large area redness and swelling. This kind of acute dacryocystitis will spontaneously rupture and drain pus, but it will also lead to lacrimal sac fistula, that is, a new lacrimal passage will be created from the lacrimal sac.

Acute dacryocystitis can be treated with antibiotics, or incision and drainage, and dressing change every day. When it turns into chronic dacryocystitis, it should be treated as chronic dacryocystitis.