Babies are sometimes born with congenital obstruction of the tear drainage system. Approximately 90% blocked ducts in babies get better naturally before one year old and it is said lacrimal sac massage helps heal spontaneously. If symptoms persist after the age of one year, a small procedure called "probing" to release the obstructed duct and following placement of a lacrimal stent to hold the passage open may be required. These treatments usually involve antibiotics to prevent conjunctivitis and dacryocystitis.