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Eye Watering (Epiphora): What It Is, Why It Happens, and How to Manage It

What is Eye watering (epiphora)?

Epiphora, commonly called “eye watering,” is the excessive production or inadequate drainage of tears, leading to a visible overflow onto the face. While a small amount of tearing is normal for lubricating the ocular surface, epiphora is considered abnormal when tears spill over the lower eyelid and cause discomfort, blurred vision, or skin irritation.

In most cases the tear film is still functioning properly; the problem lies in the drainage pathways (the puncta, canaliculi, lacrimal sac, and nasolacrimal duct) or in an over‑stimulation of tear production. Understanding the underlying cause is essential because treatment ranges from simple eyelid hygiene to surgical reconstruction.

Common Causes

Epiphora can arise from a wide variety of ocular or systemic conditions. The most frequent culprits include:

• Blocked nasolacrimal duct (NLDO): Congenital or acquired obstruction prevents tears from draining into the nose.
• Eyelid malposition: Ectropion (outward turning lid) or entropion (inward turning lid) disrupts the normal tear‑pump mechanism.
• Conjunctivitis: Viral or bacterial inflammation irritates the ocular surface, stimulating excess tear production.
• Allergic eye disease: Seasonal or perennial allergies cause itching, redness, and reflex tearing.
• Dry eye syndrome: Paradoxically, insufficient lubrication triggers a reflex increase in tear secretion.
• Blepharitis: Inflammation of the eyelid margins interferes with tear spreading and drainage.
• Contact lens wear: Poor fit or deposits can irritate the eye and cause watery eyes.
• Foreign body or corneal abrasion: Mechanical irritation leads to reflex tearing.
• Eye surgery or trauma: Post‑operative swelling or scar formation can temporarily block drainage.
• Systemic medications: Drugs such as antihistamines, isotretinoin, and some antidepressants can alter tear production.

Other less common causes include tumors of the lacrimal drainage system, thyroid eye disease, and neurological disorders that affect facial nerve function.

Associated Symptoms

The presence of additional signs can help pinpoint the cause of epiphora:

• Redness and swelling of the conjunctiva
• Itching or a gritty sensation
• Blurred vision that improves when blinking
• Discharge that is clear, mucoid, or purulent
• Crusting of the eyelashes, especially after sleep
• Pain or tenderness near the inner corner of the eye (possible dacryocystitis)
• Sensitivity to light (photophobia)
• Visible blockage or narrowing of the puncta
• Facial skin irritation or maceration from constant wetness

When to See a Doctor

While occasional tearing after a windy day or while chopping onions is normal, you should schedule an eye‑care appointment if you notice any of the following:

• Persistent tearing lasting more than two weeks despite home measures
• Accompanying pain, redness, or swelling
• Discharge that is yellow, green, or foul‑smelling (possible infection)
• Blurred vision that does not clear with blinking
• Recurrent episodes of tearing that interfere with daily activities
• History of facial trauma, eye surgery, or known eyelid malposition

Early evaluation can prevent complications such as chronic dacryocystitis, skin breakdown, or permanent damage to the lacrimal drainage system.

Diagnosis

Eye care professionals use a combination of history taking, visual examination, and specialized tests to determine why tears are overflowing.

1. Medical History

• Onset, duration, and pattern of tearing
• Recent infections, allergies, medication changes, or trauma
• Existing ocular conditions (dry eye, blepharitis, glaucoma, etc.)

2. External Examination

• Inspection of eyelid position, blink strength, and puncta patency
• Assessment for conjunctival injection, discharge, or corneal lesions

3. Dye Tests

• Fluorescein dye disappearance test (FDDT): A drop of fluorescein is placed in the lower fornix; the clinician watches how quickly the dye clears, indicating drainage efficiency.
• Jones (or dye) test: Uses fluorescein and a blue filter to trace tear flow through the lacrimal sac and nasolacrimal duct.

4. Imaging

• Nasolacrimal duct probing and irrigation: Determines if the duct is patent.
• Ultrasound or CT dacryocystography: Helps visualize obstructive lesions or tumors.

5. Other Assessments

• Schirmer test for dry eye evaluation
• Allergy skin testing or serum IgE if allergic conjunctivitis is suspected

Treatment Options

Treatment is directed at the underlying cause. Options range from simple home care to surgical intervention.

1. Home & Lifestyle Measures

• Lid hygiene: Warm compresses (5–10 minutes, 2–3 times daily) followed by gentle lid scrubs with diluted baby shampoo can improve blepharitis and meibomian gland function.
• Artificial tears: Preservative‑free lubricants reduce reflex tearing caused by dry eye.
• Allergy control: Over‑the‑counter antihistamine eye drops (ketotifen) or oral antihistamines; avoid known allergens.
• Contact lens care: Replace lenses as recommended, clean with appropriate solutions, and give eyes a “dry” day each week.
• Environmental adjustments: Use humidifiers, avoid smoke, and wear protective eyewear in windy conditions.

2. Medical Therapies

• Topical antibiotics or corticosteroids: For bacterial conjunctivitis or inflammatory eyelid disease.
• Oral doxycycline: Low‑dose (40 mg daily) can improve meibomian gland dysfunction and reduce inflammation.
• Allergy immunotherapy: For persistent allergic epiphora, sublingual or injection therapy may be considered.
• Nasolacrimal duct probing (adults): Performed under local anesthesia to clear a partial blockage.

3. Surgical Options

• Dacryocystorhinostomy (DCR): Creates a new drainage pathway between the lacrimal sac and the nasal cavity; performed endoscopically or via external incision. Success rates >90% in chronic NLDO.
• Lacrimal intubation: Placement of silicone tubes through the canaliculi to maintain patency while healing.
• Eyelid surgery: Repair of ectropion, entropion, or ptosis restores proper lid‑pump mechanism.
• Canalicular stenting or balloon dacryoplasty: Minimally invasive techniques for partial canalicular obstruction.

4. Follow‑up Care

After any procedure, patients should continue lid hygiene, use prescribed drops, and attend scheduled follow‑up visits to ensure proper healing and to detect early recurrence.

Prevention Tips

• Maintain good eyelid hygiene – clean the lid margins daily if you have blepharitis or rosacea.
• Protect eyes from irritants (smoke, chemicals, wind) with goggles or sunglasses.
• Manage allergies promptly with antihistamines or prescribed eye drops.
• Avoid over‑use of eye makeup; replace mascara every 3 months to prevent bacterial growth.
• Stay hydrated and use a humidifier in dry indoor environments.
• Schedule regular eye exams, especially if you wear contact lenses or have a history of sinus or nasal surgery.
• Do not rub your eyes vigorously; this can damage the puncta and worsen drainage.

Emergency Warning Signs

Key Take‑aways

Eye watering (epiphora) is a common complaint that can stem from simple irritation or more serious obstruction of the tear‑drainage system. Understanding the pattern of symptoms, associated signs, and when to seek professional care enables timely treatment and prevents complications. If you notice persistent tearing, especially with pain, discharge, or visual changes, book an appointment with an optometrist or ophthalmologist promptly.

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References:

• Mayo Clinic. “Epiphora (excessive tearing).” mayoclinic.org.
• Cleveland Clinic. “Lacrimal Duct Obstruction.” my.clevelandclinic.org.
• American Academy of Ophthalmology. “Dry Eye.” aao.org.
• National Institutes of Health (NIH). “Conjunctivitis.” nih.gov.
• World Health Organization. “Allergic Conjunctivitis.” who.int.
• J. S. McNab, et al. “Outcomes of Endoscopic Dacryocystorhinostomy.” *Ophthalmology* 2022;129(4): 456‑463.

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