2015年11月15日 · Most children with NLDO have both epiphora and periocular discharge, but some will have only one or the other. If epiphora is the only symptom, the possibility of canalicular atresia should be considered (see below), and it is imperative to rule out congenital glaucoma. Of note, typical NLDO does not usually cause much discomfort to patients.

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]

2023年8月8日 · 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.

Nasolacrimal duct obstruction is a blockage of the lacrimal drainage system. In children the majority of nasolacrimal duct obstruction is congenital. The blockage occurs most commonly at the distal end of the duct. Cogenital nasolacrimal duct obstruction occurs in up to 11% of normal newborn infants. [1] .

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.

Tears normally drain from the eye down to the nose through the tear duct or nasolacrimal duct. If one looks in the mirror the openings of the tear duct system can be seen in the corners of the upper and lower eyelids closest to the nose.

Congenital nasolacrimal duct obstruction (CNLDO) is a common condition causing excessive tearing or mucoid discharge from the eyes, due to blockage of the nasolacrimal duct system. Nasolacrimal duct obstruction affects as many as 20% children aged <1 year worldwide and is often resolved without surgery.

2014年7月1日 · Balloon catheter dilation, or dacryoplasty, of the nasolacrimal duct is performed mainly to relieve congenital nasolacrimal duct obstruction (NLDO) in patients for whom probing and irrigation has failed.

Nasolacrimal duct obstruction (NLDO) in children is congenital in most cases. Noncanalization of the inferior caudal end of the duct is the most common cause. Spontaneous resolution of the obstruction occurs in 96% of affected children in the first year in the natural course and conservative management is the mainstay. [1] .

Congenital obstruction of the nasolacrimal duct (NLD) is the most common ocular abnormality of infancy. 1 Typically, NLD obstruction spontaneously resolves by 6 to 8 months of age. 2 - 5 The failure of the obstruction to resolve spontaneously is attributed to abnormal persistence of a membrane or bony narrowing at the distal end of the NLD. 2 ...