Congenital Tear-Duct Obstruction (in Children)
Blocked tear ducts in infants — the usual natural resolution, massage, and when probing or intubation is needed.
Congenital Nasolacrimal Duct Obstruction
Congenital NLDO is one of the most common conditions seen in infants, occurring in approximately 6% of newborns. In most cases, the duct fails to fully canalize at its distal end (valve of Hasner) before birth, leaving a thin membrane blocking tear drainage.
| Presentation | Features |
|---|---|
| Simple obstruction | Epiphora, mucopurulent discharge; most resolve spontaneously |
| Congenital fistula | Abnormal opening in the skin below the medial canthus; may drain tears externally |
| Dacryocele / mucocele | Bluish, tense swelling at the medial canthus at birth from amniotic fluid trapped in an obstructed sac; may require urgent probing |
| Acute neonatal dacryocystitis | Infection of the lacrimal sac in the first weeks of life; risk of orbital cellulitis; requires prompt antibiotics and probing |
Natural History & Management
- Spontaneous resolution: approximately 90% of cases resolve by age 12 months as the duct canalizes naturally. Watchful waiting with lacrimal massage is appropriate until this age
- Lacrimal sac massage (Crigler technique): firm downward pressure over the lacrimal sac 2–3 times daily can create a hydrostatic pressure wave that opens the membrane at the valve of Hasner. Topical antibiotics treat secondary infection but do not cure the obstruction
Surgical Treatment — When Massage Fails
- Office probing (age 6–12 months): A fine probe is passed through the punctum and nasolacrimal duct under topical anesthesia in the office. Success rate ≈ 90% in the first year of life. Success rate declines with advancing age as the membrane thickens
- Probing under general anesthesia (age 12–24 months): Performed if office probing fails or is deferred past age 12 months; often combined with silicone intubation
- Silicone intubation: A silicone tube is threaded through both puncta, down through the duct, and retrieved from the nose. Held in place for 3–6 months to prevent re-stenosis. Success rate >90% when added to probing
- Balloon dacryoplasty: A fine balloon catheter is inflated at 75–150 PSI within the duct to dilate the obstruction. Alternative to intubation for refractory cases
- DCR (dacryocystorhinostomy): Reserved for failures of probing and intubation, or when anatomy (severe stenosis, canalicular disease) precludes simpler approaches. Success rates comparable to adult DCR
Frequently Asked Questions
- My baby's eye is always watery and sticky — is it serious?
- Most congenital tear-duct blockages are not serious and resolve on their own within the first year, often helped by gentle tear-sac massage. Persistent cases are treated with a quick probing procedure.
- When does a blocked tear duct in a baby need surgery?
- When it has not resolved by about 12 months, or with recurrent infection, a brief probing (sometimes with silicone intubation) opens the duct.
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