H04.53

Clinical Causes: Developmental delay or incomplete canalization of the nasolacrimal duct during fetal development. Congenital malformation or maldevelopment of the tear drainage system. Infections that cause swelling and blockages in the duct. Fibrous tissue formation or scarring leading to obstruction over time.

Key Symptoms: Persistent tearing or watery eyes in one or both eyes. Mucous or pus discharge from the corner of the eye. Swelling or redness near the inner corner of the eye. Frequent infections such as conjunctivitis. Blurred vision in some cases due to excessive tearing.

Diagnosis Path: Diagnosis is primarily clinical, involving a healthcare professional examining the eye for signs of blockage, swelling, or discharge. Tests such as dye disappearance test or irrigation may be performed to confirm the diagnosis and determine the location of the obstruction. Imaging studies like dacryocystography are rarely needed but can be used in complex cases to visualize the tear drainage system.

Treatment Protocols: Most neonatal nasolacrimal duct obstructions resolve spontaneously within the first year of life. Conservative management involves regular cleaning of the eyelids and massage techniques to promote duct opening. If symptoms persist or complications such as infection develop, medical or surgical treatments may be necessary. These include: - **Probing:** A minimally invasive procedure to open the blocked duct. - **Dacryocystorhinostomy (DCR):** A surgical procedure to create a new tear drainage pathway, typically reserved for older children or adults. - **Antibiotics:** Used to treat secondary infections if they occur. Most interventions are performed by specialized ophthalmologists or pediatric eye specialists. The prognosis for this condition is generally excellent, especially when diagnosed early and managed appropriately.