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8 Αυγ 2023 · Nasolacrimal duct obstruction (NLDO) or dacryostenosis is the most common disorder of the lacrimal system, and approximately 6 to 20 percent of newborns exhibit symptoms of this condition.
15 Νοε 2015 · NLDO is by far the most common cause of epiphora and periocular discharge in infants. The presence of enlarged tear lakes and periocular discharge helps confirm the diagnosis. The vast majority of infants with these findings will have NLDO.
Congenital nasolacrimal duct obstruction occurs in approximately 5% of normal newborn infants. The blockage occurs most commonly at the valve of Hasner at the distal end of the duct. There is no sex predilection and no genetic predisposition. The blockage can be unilateral or bilateral.
Secondary acquired nasolacrimal duct obstruction (SANDO) is an obstruction of the nasolacrimal duct caused by a secondary etiology, as opposed to the idiopathic primary acquired nasolacrimal duct obstruction (PANDO). To be classified as SANDO, a specific cause must be identified.
Nasolacrimal duct obstruction is the obstruction of the nasolacrimal ducts (better known as the tear ducts) and may be either congenital or acquired. Obstruction of the nasolacrimal ducts leads to the excess overflow of tears called epiphora. [2]
Over 5% of infants have symptoms of nasolacrimal duct obstruction affecting one or both eyes. Most (approximately 90%) clear on their own during the first year of life. What are the signs/symptoms of tear duct obstruction?
6 Μαρ 2024 · Dacryostenosis is an acquired or congenital condition that results from nasolacrimal duct obstruction and causes epiphora or watery eyes. This condition is derived from the Greek words dákryon ("tear") and stenósis ("narrowing").
