Eye discharge (epiphora) in house rabbits is a symptom, not a primary disease. Because rabbit nasolacrimal (tear) ducts run directly past the roots of their upper incisors and premolars, eye problems are frequently caused by hidden dental issues. Reviewed by Dr. Claire Vance, DVM.
Emergency Checklist: When to See a Veterinarian Immediately
While minor watery discharge from dust or hay chaff can sometimes be wiped clean, certain symptoms signal a medical emergency that requires prompt exotic veterinary care:
- Thick white or yellow pus-like discharge: Indicates a bacterial infection or deep dacryocystitis (tear sac infection).
- Cloudy or opaque cornea: A potential corneal ulcer, which can rapidly worsen and cause vision loss.
- Bulging eye (Exophthalmos): Frequently caused by a retrobulbar abscess behind the eye socket.
- Lethargy or refusal to eat: Rabbits hiding pain may stop eating, risking fatal GI stasis.
Common Causes of Eye Discharge in Rabbits
Understanding why your bunny has watery or matted eyes is crucial for proper treatment:
1. Blocked Nasolacrimal (Tear) Ducts (Dacryocystitis)
The nasolacrimal duct drains tears from the eye into the nasal cavity. In rabbits, this duct is extremely narrow and takes a tortuous path past tooth roots. Inflammation, mucus plugs, or tooth root elongation can compress the duct, forcing tears to spill over the eyelids.
2. Dental Disease & Molar Spurs
Rabbit teeth grow continuously throughout their lifespan. If upper molar roots grow upward into the maxillary bone (elongated roots), they press directly against the tear duct. This is the single most common underlying cause of chronic weepy eyes in adult house rabbits.
3. Foreign Bodies (Hay Chaff & Dust)
Small pieces of Timothy hay or dusty bedding can easily get trapped under the third eyelid (nictitating membrane), causing localized irritation and tearing.
4. Bacterial Infections & Conjunctivitis
Bacteria such as Pasteurella multocida or Staphylococcus aureus can cause inflammation of the conjunctiva, leading to redness, swelling, and purulent discharge.
How to Safely Clean a Rabbit's Weepy Eye at Home
While waiting for your veterinary appointment, you can keep your rabbit comfortable by gently cleaning the eye area:
- Wash Your Hands Thoroughly: Always sanitize your hands before touching your rabbit's face.
- Prepare Sterile Saline: Use a warm, sterile 0.9% saline solution (or boiled water allowed to cool to room temperature). Never use contact lens solution or medicated human eye drops.
- Moisten a Soft Gauze Pad: Dampen a lint-free cotton pad or soft gauze with warm saline.
- Wipe Gently Outward: Gently wipe from the inner corner of the eye toward the outer corner. Never apply pressure directly to the eyeball.
- Apply Barrier Ointment (If Recommended): To prevent facial scalding from chronic dampness, your vet may recommend applying a tiny dab of plain sterile petroleum jelly to the fur below the eye.
Veterinary Diagnosis & Treatment Options
An exotic veterinarian will perform a thorough examination, which may include:
- Fluorescein Stain Test: Checks for corneal scratches or ulcers.
- Tear Duct Flush: Flushing the duct with sterile saline using a lacrimal cannula to clear debris.
- Skull Radiographs (X-rays) or CT Scan: Evaluates molar root growth and jaw bone structure.
- Topical Antibiotic Eye Drops: Prescribed based on culture results (e.g., ciprofloxacin or tobramycin drops).
Frequently Asked Questions (FAQ)
Can I use human eye drops for my rabbit?
No. Never use human OTC eye drops (such as Visine or steroid drops) on rabbits. Steroid eye drops can cause fatal systemic immunosuppression or worsen corneal ulcers.
Why does my rabbit only have one weepy eye?
Unilateral (one-sided) discharge is most commonly caused by a foreign body, localized tear duct blockage, or a single elongated molar root on that side of the jaw.
