Adult Nasolacrimal Duct Obstruction & Dacryocystitis
Acquired blockage of the nasolacrimal drainage pathway causing chronic tearing, discharge, and acute or chronic dacryocystitis.
Article Table of Contents
1. Comprehensive Overview
The nasolacrimal drainage system channels tears from the medial canthal puncta through the canaliculi into the lacrimal sac and down the nasolacrimal duct into the inferior nasal meatus.
Acquired Adult NLDO Types: 1. Primary Acquired Nasolacrimal Duct Obstruction (PANDO): Age-related idiopathic chronic fibrosis and luminal narrowing, predominantly affecting postmenopausal women due to anatomical and hormonal factors. 2. Secondary NLDO: Caused by chronic rhinosinusitis, nasal polyposis, midfacial trauma/naso-ethmoid fractures, dacryolithiasis, or granulomatous diseases.
Complications: Stagnant lacrimal pool predisposes to Dacryocystitis (acute or chronic infection of the lacrimal sac), presenting as a tender, erythematous swelling inferior to the medial palpebral ligament with purulent reflux upon digital compression.
2. Symptoms & Warning Signs
If you observe any of the following symptoms repeatedly, an eye exam is strongly recommended:
- Constant epiphora (tears overflowing onto the cheek) independent of emotion or wind
- Frequent wiping of the eye causing eczematous irritation and maceration of the lower eyelid
- Sticky mucopurulent discharge crusted on lashes and inner canthus
- Painful, erythematous swelling at the medial canthus over the lacrimal sac (dacryocystitis)
- Reflux of pus from the puncta upon digital pressure over the lacrimal sac
- Blurred vision caused by excessive precorneal tear pooling
3. Causes & Risk Factors
- 1Age-related idiopathic mucosal fibrosis and involutional stenosis (PANDO)
- 2Chronic rhinosinusitis, hypertrophic turbinates, nasal septal deviation, and nasal polyps
- 3Recurrent bacterial conjunctivitis and canalicular infections
- 4Prior naso-orbito-ethmoid fractures or facial trauma
- 5Dacryoliths (calculi formed from stagnant tear proteins and Actinomyces bacteria)
4. Treatments & Medical Management
5. Prevention & Daily Eye Care Advice
- Prompt medical management of chronic rhinitis and sinus allergies
- Gentle dabbing instead of rough downward wiping of the lower eyelid to prevent ectropion
- Early ophthalmologic evaluation of persistent epiphora before suppurative abscess formation
6. When to Seek Emergency Eye Care
Visit an immediate eye emergency center if you experience any of the following critical indicators:
- ⚠Acute painful, red swelling at the medial canthus over the tear sac area
- ⚠Gross purulent or blood-tinged discharge from the tear duct
- ⚠Fever accompanying lacrimal sac swelling (dacryocystitis requiring urgent antibiotics)
- ⚠Persistent unremitting epiphora failing topical therapy for over 4 weeks
7. Frequently Asked Questions
Q:Does DCR surgery leave a visible facial scar?
Endoscopic DCR is performed entirely inside the nose with zero facial incision. External DCR uses a miniature incision within the natural medial skin crease, healing with a virtually undetectable scar.