eye disorders
Dacryostenosis
Congenital dacryostenosis
Congenital dacryostenosis can result from inadequate development of any part of the nasolacrimal ducts. Most often, the far end of the nasolacrimal duct is blocked. The result is an overflow of tears that run down the cheek (epiphora) or causes persistent crusting. One or both eyes can be affected. The problem is usually first noticed in 3- to 12-week-old infants. This type of blockage usually disappears without treatment by the age of 6 to 9 months, as the nasolacrimal system develops. Until the child is about 1 year old, doctors often suggest that parents gently massage the tear sac 4 or 5 times per day to help relieve the blockage. If the blockage is not relieved by the time the child is about 1 year old, an ear, nose, and throat specialist (otorhinolaryngologist) or an eye specialist (ophthalmologist) may have to open the nasolacrimal duct with a small probe, which is usually inserted through the duct opening (punctum) at the inner corner of the eyelid near the nose. The child is usually given a general anesthetic for this procedure. 