2025 Vet Guide: Epiphora in Dogs – Watery Eyes Causes, Diagnosis & Care 🐶
By Dr. Duncan Houston BVSc
Excessive tearing—known in veterinary medicine as epiphora—is a visible symptom that can arise from many underlying causes. While often benign, it can also signal irritation, infection, or structural issues. Let's explore causes, diagnostics, treatment, and practical care. 👁️
🔎 1. What Is Epiphora?
Epiphora refers to an overflow of tears from the eyes onto the face, often causing dampness and reddish-brown staining from tear pigments like porphyrins.
⚠️ 2. When to Be Concerned
- Clear, watery tear stains—common in certain breeds—but watch for accompanying redness, odor, or irritation.
- Discharge with mucus, pus, green/yellow tint, or signs of corneal ulcer—immediate vet consultation needed.
- Frequent squinting, pawing, facial swelling, or vision issues may indicate pain or serious eye disease.
🧩 3. Common Causes
| Cause Category | Examples | Notes |
|---|---|---|
| Irritation & Inflammation | Pollen, dust, debris, conjunctivitis, corneal ulcers | Triggers tear flushing for comfort. |
| Anatomical & Drainage Issues | Blocked ducts, imperforate puncta, flat faces (brachycephalic breeds) | Prevents normal tear drainage, causing overflow. |
| Eyelid/Eyelash Abnormalities | Entropion, ectropion, distichiasis, ectopic cilia | Rubs or damages the cornea, increasing tear production. |
| Breed Predisposition | Shih Tzu, Pekingese, Maltese, Cocker Spaniel, Bulldogs, Pugs | Anatomy often causes overflow even without disease. |
| Serious Eye Conditions | Glaucoma, dry eye (KCS), keratitis, and nasal masses | Often presents with discomfort, colored discharge, and pigmentation. |
| Infections & Allergies | Bacterial/viral/fungal conjunctivitis, allergic rhinitis | Redness and discharge are likely treatable. |
| Dental Disease | Tooth root abscesses | It can affect nearby tear drainage or irritation. |
🩺 4. Diagnostic Approach
- Comprehensive physical and eye exam, including eyelids, lashes, and cornea inspection.
- Schirmer's tear test to check tear production.—identifies dry eye (KCS).
- Fluorescein dye test reveals corneal ulcers, eyelid penetration, or drainage flow.
- Nasolacrimal flush under sedation to confirm duct patency.
- Assessment for eyelid/eyelash abnormalities such as entropion or distichiasis.
- Measurement of intraocular pressure for glaucoma assessment.
🛠️ 5. Treatment Options
- Remove irritants: Trim hair, clean eyes, keep the environment free from dust and debris.
- Flush ducts: Nasolacrimal irrigation for blocked tear drainage.
- Medicated drops: Antibiotics or anti-inflammatories for infections or ulcers.
- Surgical corrections: Entropion/ectropion repair, eyelash removal, duct openings for congenital defects.
- Chronic diseases: Manage glaucoma, KCS with tear stimulants, or moisture agents.
- Allergy management: Antihistamines or immunotherapy if needed.
🏡 6. Home Care & Prevention
- Clean tear-stained fur daily with a warm, damp cloth; trim fur regularly to avoid irritation.
- Provide a clean, dust-free environment; use humidifiers if air is dry.
- Keep ocular and facial areas dry to prevent bacterial growth—watch for odor or redness.
- Use prescribed eye drops—never over-the-counter peroxide-based cleaners that can harm the eye.
- Prevent injuries: supervise outdoor activity and wear protective gear during windy conditions.
📱 7. Monitoring & Support Tools
- Ask A Vet: Remote guidance for tear staining, medication timing, and urgent care decisions.
- Woopf: Log symptoms, treatments, triggers, and vet follow-up visits.
- Purrz: Track tear color, eye comfort, cleaning routines, and progression over time.
📚 Frequently Asked Questions
Q: Is epiphora normal in flat-faced breeds?
Yes—it can be normal due to anatomy. However, persistent staining or signs of infection should still prompt veterinary evaluation.
Q: What if the tears are discolored?
Green/yellow suggests infection; mucus or crusting indicates inflammation—consult your vet if you observe these signs.
Q: Can tear stains be prevented?
Regular facial cleaning, keeping the area dry, trimming hair, and flushing ducts help prevent staining and secondary infection.
💬 Owner Insight
> “Our Maltese always had tear stains until vet flushed her ducts and we cleaned daily. Now her face stays clean and eyes are bright!”
🏁 Final Thoughts from Dr Houston
Epiphora is more than cosmetic—it’s a sign your dog may be experiencing irritation, anatomical, or disease-related issues. With proper diagnostics, targeted treatment, and supportive home care including Ask A Vet, Woopf, and Purrz tracking, you can help keep your dog’s eyes healthy and stain-free into 2025 and beyond. 💙👁️
Download the Ask A Vet app for tear-stain support, symptom tracking, and veterinary guidance. 📱
AskAVet.com – Proudly helping your pup see and feel their best.
This article is general veterinary education and does not diagnose or treat an individual animal. Always confirm medication names, doses and interactions with the veterinarian who knows your pet.
If your animal is struggling to breathe, collapsed, bleeding heavily, seizing, or has eaten something toxic, contact your vet or the nearest emergency clinic now.
Animal Poisons Helpline (AU) 1300 869 738 · Animal Poisons Helpline (NZ) 0800 869 738 · ASPCA Animal Poison Control (US) (888) 426-4435
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Ask A Vet articles are written by Dr Duncan Houston BVSc, a practising veterinarian, unless another author is named in the byline.




