Nasolacrimal Duct Obstruction
Nasolacrimal duct obstruction presents as epiphora from congenital Hasner's valve imperforation (affecting 6% of neonates) or acquired primary acquired NLDO typically affecting women over 40 through idiopathic fibrosis.
When Nasolacrimal Duct Obstruction is handled within general ENT, definition, risk and function are considered together. Nasolacrimal duct obstruction presents as epiphora from congenital Hasner's valve imperforation (affecting 6% of neonates) or acquired primary acquired NLDO typically affecting women over 40 through idiopathic fibrosis. Patient expectation, pace of change, previous treatment and effect on daily performance determine the value of assessment. the dictionary entry assessment brings nasal-sinus symptoms, this topic throat-tonsil context, this term upper-airway impact and the finding sleep links into one ENT frame. The aim is to explain this entry generally while leaving personal decisions to clinical review. The first message for the clinical point is that the finding becomes meaningful through history, examination and selected tests: Congenital NLDO presents with neonatal epiphora and mucopurulent discharge; 90% resolves spontaneously by 12 months. This keeps online information from replacing personal diagnosis.
Assessment of the dictionary entry separates the story into timing, side, severity and triggers before conclusions are made. this topic examination looks for findings that confirm or change that story. the clinical point review may combine ENT examination, the dictionary entry endoscopic assessment, this topic oral cavity-oropharynx inspection and this term audiological testing when useful. the finding decisions record fever, this entry pain-bleeding pattern, the clinical point hearing or nasal blockage, the dictionary entry sleep impact and this topic infection recurrence separately. When this term is assessed, the short definition, patient wording and objective findings are read together: Endonasal (endoscopic) DCR (dacryocystorhinostomy) is the gold standard: 90% success, no external scar, faster recovery. Higher-risk possibilities are considered first, then the next clinical step is chosen. Testing is selected only when it can change diagnosis or treatment planning.
Care planning for the dictionary entry depends on the balance between diagnostic certainty and realistic patient benefit. Mild stable findings are discussed with a lower-urgency frame, while progressive or structural problems receive closer attention. this topic planning discusses medical treatment, this term allergy control, the finding endoscopic procedures, this entry adenoid-tonsil strategy or the clinical point airway surgery by indication. Before a care path is chosen for the dictionary entry, expected benefit, alternatives, recovery, possible complications and the later review plan are discussed in the same visit. The plan is kept open to follow-up reassessment.
Good monitoring after this topic shows whether patient-perceived change matches objective findings. this term follow-up compares pain, the finding nasal openness, this topic sleep quality, this term hearing impact and the finding infection recurrence over time. Patient counselling for this entry aims to prepare the right questions without replacing personal diagnosis with online information, recognize safety signals and decide with examination findings. Warning signs such as the clinical point follow-up with high fever, increasing pain, worsening blockage or recurrent infection are recorded as reasons to discuss the recovery course again.
Reading about the dictionary entry is preparation rather than a personal care decision; the visit is more useful when older reports, images, operation notes and the main expectation are organized beforehand.
In the patient file, this topic context: older document notes are read with current findings; general information does not become a personal decision; For terminology clarity, nasolacrimal finding, duct planning connect to examination language.
Diagnosis
Fluorescein dye disappearance test (>5-minute retention = impaired drainage). Lacrimal irrigation (saline infusion confirms: patent, partial or complete obstruction). Dacryocystography (X-ray contrast) or CT-dacryocystography provides anatomical detail. Nasal endoscopy assesses the inferior meatus and nasolacrimal duct ostium. Dacryocystitis: acute triad of tender medial canthal swelling plus purulent discharge plus suppuration; early drainage is mandatory.
Treatment
Congenital: Crigler massage for 4–6 months; probing under GA at 12–18 months if no resolution. Adult PANDO: endonasal DCR gold standard (90% success, no external scar); external DCR for limited access (85% success). Intraoperative mitomycin C 0.02% improves patency. Silicone bicanalicular intubation left for 3–6 months. Dacryocystitis: acute I&D under local anaesthesia, systemic antibiotics, DCR planned after recovery.
Outcomes and Follow-up
Congenital NLDO spontaneous resolution 90% at 12 months. Dacryocystitis after probing 2–5%. Endonasal DCR: patent at 1 year 90%, patient satisfaction >85%. Revision DCR for failed primary: 75% success. Silicone tube removal at 3–6 months. Long-term patency is improved with mitomycin C application.
When to Seek Care
Persistent watery eye since birth (congenital), purulent discharge from the lacrimal punctum, or painful swelling at the medial canthus (dacryocystitis = acute infection requiring same-day drainage) and post-trauma epiphora are indications for ENT or oculoplastic surgical referral. Dacryocystitis is an emergency; it must not be delayed.
Frequently asked questions
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Learn more about this procedure
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References
This glossary entry is for informational purposes only and does not constitute medical advice. Consult a qualified specialist for diagnosis and treatment.