Watering Eye in Adults: Approach to Epiphora, Syringing, Dye Tests and Treatment
Last updated: November 2026
A watering eye is one of the commonest complaints in the eye OPD, and it is not always a blocked tear duct. Tears can overflow because too many are made (often from dry eye or irritation) or because they drain poorly (lid, punctum, canaliculus, sac or duct). A short, logical examination usually finds the cause before any syringing.
Two mechanisms
| Hypersecretion (too many tears) | Drainage failure (tears cannot leave) |
|---|---|
| Dry eye with reflex tearing (commonest in older adults) | Lid malposition: ectropion, lid laxity, facial nerve palsy |
| Blepharitis and meibomian gland dysfunction | Punctal stenosis, eversion or occlusion |
| Trichiasis, entropion, foreign body, concretions | Conjunctivochalasis blocking the tear meniscus or punctum |
| Allergic or infective conjunctivitis, keratitis | Canalicular block or canaliculitis |
| Emotional, gustatory ("crocodile tears" after facial palsy) | Nasolacrimal duct obstruction (primary acquired, or secondary to trauma, sinus surgery, tumour) |
History
- One or both eyes; constant or intermittent; worse outdoors, in wind or when reading.
- Sticky discharge or swelling at the inner corner (sac infection or mucocele).
- Previous facial trauma, nasal or sinus surgery, radiotherapy, chemotherapy (e.g. some agents cause canalicular stenosis), facial palsy.
- Grittiness and burning (dry eye, lid disease).
- Blood-stained tears or a hard mass above the medial canthal tendon (exclude lacrimal sac tumour).
Examination
Outside in
- Tear meniscus height on the slit lamp (high meniscus suggests poor drainage).
- Lids: position, laxity (snap-back and distraction tests), blink, entropion, ectropion, facial nerve function.
- Puncta: size, position (should touch the tear lake), stenosis, pouting (canaliculitis).
- Conjunctiva and cornea: conjunctivochalasis, blepharitis, trichiasis, staining, tear break-up time.
- Press over the sac: reflux of mucus or pus confirms obstruction below the sac.
- Fluorescein dye disappearance test: put 2% fluorescein in both eyes; after 5 minutes, dye remaining in one eye suggests poor drainage on that side.
Syringing (lacrimal irrigation): how to interpret
| Finding | Meaning |
|---|---|
| Fluid passes freely to the nose and throat | Patent system (functional block possible) |
| Regurgitation through the same punctum | Block of that canaliculus |
| Regurgitation through the opposite punctum, no swelling of the sac | Common canalicular block |
| Regurgitation through the opposite punctum with mucus or pus, sac distends | Nasolacrimal duct obstruction |
| Partial passage with some regurgitation | Partial stenosis |
| Hard stop (cannula reaches bone) | Cannula is in the sac: canaliculi patent |
| Soft stop (cannula stops before bone, spongy feel) | Canalicular obstruction |
Jones tests (less used now): primary test checks dye in the nose without syringing (normal physiological drainage); secondary test checks dye after syringing. Imaging (dacryocystography, dacryoscintigraphy, CT for trauma or tumour) is used in selected cases.
Treatment
| Cause | Treatment |
|---|---|
| Dry eye and lid disease | Lubricants, lid hygiene, treat MGD; avoid probing a patent system |
| Lid laxity or ectropion | Lateral tarsal strip or other lid tightening |
| Punctal stenosis | Dilation, punctoplasty (snip procedures) |
| Conjunctivochalasis | Lubricants, then conjunctival resection or cautery (see conjunctivochalasis) |
| Canaliculitis | Canaliculotomy with removal of concretions, antibiotics |
| Nasolacrimal duct obstruction | Dacryocystorhinostomy (external or endonasal); see DCR |
| Canalicular block | Canalicular DCR or conjunctivodacryocystorhinostomy with a Lester Jones tube |
| Acute dacryocystitis | Systemic antibiotics, warm compresses, drainage if abscess; DCR once settled |
Pearls
- In older adults, look for dry eye, lid laxity and conjunctivochalasis before blaming the tear duct.
- A high tear meniscus points to drainage; a normal meniscus with irritation points to reflex tearing.
- Blood-stained tears or a mass above the medial canthal tendon need imaging to exclude a tumour.
Common mistakes
- Syringing everyone without examining the lids and puncta.
- Calling a patent syringe "normal" when a functional block or lid laxity is the problem.
- Missing canaliculitis (pouting punctum, concretions) and treating it as conjunctivitis.
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Related: Watering Eye and Blocked Tear Duct: DCR Surgery Explained, Congenital Nasolacrimal Duct Obstruction: Massage, Probing and When to Refer, Conjunctivochalasis: The Missed Cause of Watering and Dry Eye Symptoms in Older Patients, TFOS DEWS III: What Changed in Dry Eye Diagnosis and Treatment, Bandage Contact Lenses and Punctal Plugs: Indications, Choosing the Size and Type, Fitting and Follow-Up.
Key sources
- Kanski JJ, Bowling B. Clinical Ophthalmology: A Systematic Approach. Lacrimal drainage system
- Ali MJ. Principles and Practice of Lacrimal Surgery. 2nd ed. Springer; 2018
- Royal College of Ophthalmologists. Ophthalmic services guidance: oculoplastic and lacrimal services
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