What disease causes old tears in the eyes

Often shed tears may be related to trachoma, chronic dacryocystitis, lacrimal punctum obstruction, lacrimal duct tumor and other diseases, lacrimal punctum or lower eyelid ectropion is also easy to shed tears, trichiasis is easy to stimulate the eyeball, but also can cause tears symptoms. Trichiasis can do surgery correction. Eye infection caused by tears, should be anti-infection treatment.