Common Causes

Epiphora can arise from problems with tear production, tear drainage, or the surface of the eye. Below are the most frequent culprits, grouped by mechanism.

• Dry eye syndrome – paradoxically, a lack of adequate lubrication stimulates reflex tearing.
• Allergic conjunctivitis – pollen, dust, pet dander, or mold trigger histamine release, causing watery eyes.
• Infections – viral (adenovirus) or bacterial conjunctivitis produce copious discharge.
• Blocked nasolacrimal duct – congenital or acquired obstruction (e.g., after sinus infection).
• Eyelid malposition – ectropion (outward turning) or entropion (inward turning) impairs tear flow.
• Blepharitis – inflammation of the eyelid margin alters tear film stability.
• Eye irritants – smoke, wind, chemicals, or contact lens wear can provoke reflex tearing.
• Foreign body or corneal abrasion – any surface injury elicits a protective tear response.
• Medication side‑effects – antihistamines, isotretinoin, or certain glaucoma drops can disturb tear dynamics.
• Systemic conditions – rheumatoid arthritis, sarcoidosis, or Sjögren’s syndrome may affect lacrimal gland function.

Associated Symptoms

Excess tearing rarely occurs in isolation. The following signs often accompany epiphora, and their presence can help pinpoint the underlying cause.

• Redness or pinkness of the sclera (conjunctival injection)
• Itching, burning, or gritty sensation
• Blurred vision that clears after blinking
• Discharge that is clear, mucoid, or purulent
• Sensitivity to light (photophobia)
• Swelling of the eyelids or surrounding skin
• Eye pain or a feeling of a foreign body
• Recurring chalazia or styes
• Dryness or gritty feeling despite tearing (common in dry‑eye‑related epiphora)

When to See a Doctor

Most cases of mild tearing resolve with simple home care, but medical evaluation is warranted when any of the following occur:

• Symptoms persist for more than 2 weeks despite self‑care
• Discharge becomes yellow/green, thick, or foul‑smelling (possible infection)
• Vision is consistently blurry, double, or you notice a sudden vision change
• Eye pain is moderate to severe, or you feel pressure behind the eye
• Swelling or redness spreads to the cheeks, nose, or forehead
• There is a history of recent eye injury, surgery, or a foreign object
• You have known autoimmune disease (e.g., Sjögren’s) and notice new tearing
• Children under 5 have persistent tearing, which may signal a congenital nasolacrimal duct obstruction

Diagnosis

Eye care professionals (optometrists or ophthalmologists) use a step‑wise approach to identify the cause of epiphora.

1. Medical History

Questions focus on symptom duration, triggers (allergens, screen time, wind), medication use, systemic illnesses, and prior eye problems.

2. Visual Acuity Test

Ensures that tearing is not masking a refractive error or more serious ocular disease.

3. Slit‑lamp Examination

High‑magnification inspection of the eyelid margins, conjunctiva, cornea, and tear film. The clinician looks for signs of blepharitis, conjunctivitis, corneal abrasions, or foreign bodies.

4. Lacrimal System Evaluation

• Punctal patency test – fluorescein dye is placed in the lower punctum; normal drainage clears the dye within seconds.
• Silicone intubation or dacryocystography – imaging (X‑ray, CT, or MRI) may be ordered if a nasolacrimal duct blockage is suspected.

5. Additional Tests (as needed)

• Allergy skin testing or serum IgE levels
• Schirmer test for tear production (used when dry‑eye disease is suspected)
• Culture of discharge if infection is suspected

Treatment Options

Therapy depends on the root cause and ranges from simple lifestyle tweaks to surgical intervention.

1. Home & Lifestyle Measures

• Use preservative‑free artificial tears 3–4 times daily for dry‑eye‑related tearing.
• Apply warm compresses (5–10 min) 2–3 times a day for blepharitis or meibomian gland dysfunction.
• Practice good eyelid hygiene – gentle scrubbing with diluted baby shampoo.
• Avoid known irritants (smoke, wind, strong fragrances).
• Take regular screen breaks (20‑20‑20 rule) to reduce reflex tearing.
• Stay hydrated and maintain a diet rich in omega‑3 fatty acids (fish, flaxseed) to support tear quality.

2. Pharmacological Treatments

• Antihistamine or mast‑cell stabilizer eye drops (e.g., olopatadine) for allergic conjunctivitis.
• Antibiotic drops or ointments for bacterial conjunctivitis (e.g., moxifloxacin).
• Topical corticosteroids (short‑term) for severe inflammation, prescribed by a physician.
• **Oral doxycycline** – low‑dose therapy can improve meibomian gland function.
• **Lacrimal plugs** – silicone or collagen plugs inserted into the puncta to decrease drainage in dry‑eye patients.

3. Procedural / Surgical Options

• Punctal dilation or stenting – widens the puncta to improve tear outflow when they are too narrow.
• Nasolacrimal duct probing or intubation – restores drainage in partial or complete blockages, often used in children.
• Dacryocystorhinostomy (DCR) – creation of a new drainage pathway from the lacrimal sac to the nasal cavity; performed for chronic nasolacrimal duct obstruction.
• Eyelid surgery – correction of ectropion, entropion, or ptosis that interferes with tear spread.
• Lipocalin‑based eye drops – emerging therapy that stabilizes the tear film in refractory cases.

Prevention Tips

While some causes (e.g., congenital duct obstruction) cannot be prevented, many everyday habits reduce the risk of developing epiphora.

• Maintain eyelid hygiene—clean the lid margins daily, especially if you wear makeup.
• Use protective eyewear in dusty, windy, or chemically harsh environments.
• Limit exposure to known allergens; keep windows closed during high pollen counts and use HEPA filters.
• Stay hydrated and limit excessive caffeine or alcohol, which can dehydrate the ocular surface.
• Take regular breaks from digital screens to reduce reflex tearing.
• Follow prescribed medication schedules; discuss side‑effects with your provider if you notice dryness or excess tears.
• Schedule routine eye exams (at least every 1–2 years) to catch early lid or tear‑film problems.

Emergency Warning Signs

Key Take‑aways

Epiphora is usually a symptom of an underlying ocular or systemic condition. Most cases are manageable with simple measures, but persistent or severe tearing warrants professional evaluation to prevent complications such as chronic infection, corneal damage, or permanent scarring of the drainage system.

For reliable information, consult reputable sources such as the Mayo Clinic, CDC, NIH, WHO, and the Cleveland Clinic.