Nasolacrimal Duct Obstruction
Blockage of the tear drainage system causing excessive tearing and discharge, common in newborns.
Full Definition
Nasolacrimal duct obstruction (NLDO) occurs when the tear drainage pathway from the eye to the nose becomes blocked, most commonly due to incomplete canalization of the nasolacrimal system in newborns. The condition affects approximately 5-6% of newborns and typically presents with excessive tearing (epiphora), mucoid discharge, and crusting around the affected eye. Conservative management includes massage of the lacrimal sac and topical antibiotics for secondary infections. If symptoms persist beyond 12 months of age, surgical intervention with nasolacrimal duct probing may be necessary. The condition can be unilateral or bilateral and may be associated with other congenital anomalies.
Usage
Usage note: NLDO is an acceptable abbreviation in clinical documentation; specify laterality when documenting.
In Context
- "The 6-month-old presented with nasolacrimal duct obstruction characterized by persistent tearing and mucopurulent discharge." — Pediatric ophthalmology consultation
- "Conservative management of nasolacrimal duct obstruction with massage techniques resolved the symptoms by 10 months of age." — Follow-up examination documentation