Conjunctivitis in Rabbits: Red Eye, Discharge, and Treatment

Conjunctivitis is inflammation of the conjunctiva, the thin pink tissue lining the eyelids and covering part of the eye. In rabbits, it usually shows up as a red eye, tearing, mucus or pus-like discharge, and frequent pawing or rubbing at the face.

It is not one single disease. Instead, it is a visible sign that something is irritating or infecting the eye. That "something" may be as mild as dust or hay poking the eye, or as involved as a blocked tear duct, dental root disease, respiratory infection, eyelid abnormality, or corneal ulcer.

Rabbits deserve quick attention for eye problems because they hide pain well. A sore eye can make a rabbit eat less, and reduced eating can lead to dangerous gut slowdown. Early care often means fewer complications and a lower overall cost range.

Some rabbits have conjunctivitis in one eye, while others develop signs in both eyes. One-sided discharge can raise concern for a local problem like trauma, tear duct blockage, or tooth root disease. Two-sided discharge may fit irritation, infection, or broader upper respiratory disease, but your vet needs to sort out the cause.

Rabbits can develop conjunctivitis from both infectious and noninfectious causes. Common irritants include dusty bedding, hay pieces, grooming debris, and cleaning chemicals. Trauma also matters. A scratch to the cornea, a foreign body under the eyelid, or repeated rubbing can all trigger redness and discharge.

Infection is another important category. Bacteria such as Pasteurella multocida may affect the eyes, nose, and tear ducts, and infected rabbits can spread disease through direct contact or contaminated items. Some rabbits also have conjunctivitis alongside upper respiratory disease, so eye discharge and sneezing may appear together.

A major rabbit-specific cause is tear duct and dental disease. Rabbits have continuously growing teeth, and abnormal tooth roots or abscesses can press on the nasolacrimal duct and block normal tear drainage. When tears cannot drain well, the eye stays wet, the skin becomes irritated, and secondary infection becomes more likely.

Less common causes include eyelid abnormalities, glaucoma, masses near the eye or nasal passages, and deeper eye disease that only looks like conjunctivitis at first. That is why a red eye should not be assumed to be a routine infection. Your vet needs to identify the underlying reason before choosing treatment.

Diagnosis starts with a careful history and physical exam. Your vet will ask when the discharge started, whether one or both eyes are affected, what bedding and cleaners you use, whether your rabbit is sneezing, and whether there are any chewing, drooling, or appetite changes that could point toward dental disease.

The eye exam may include checking the eyelids, conjunctiva, cornea, and tear drainage. A fluorescein stain is commonly used to look for a corneal ulcer or scratch. If discharge is significant or keeps coming back, your vet may collect a sample for cytology or bacterial culture to help guide medication choices.

Because rabbit eye problems often connect to the teeth and tear ducts, imaging is frequently part of the workup. Skull X-rays can help assess tooth roots and abscesses, while CT can give more detail in complicated cases. If a blocked tear duct is suspected, your vet may recommend a nasolacrimal flush, which can confirm obstruction and sometimes improve drainage.

Diagnosis is about ruling out look-alikes as much as naming conjunctivitis. Corneal ulcers, uveitis, glaucoma, dacryocystitis, tooth root abscesses, and masses can all cause red eye or discharge. The best treatment plan depends on which of those problems is actually present.

Not every case can be prevented, but daily husbandry makes a real difference. Keep your rabbit's enclosure clean, dry, and well ventilated. Choose low-dust hay and bedding when possible, and avoid strong cleaning sprays, scented products, or aerosolized chemicals near the habitat.

Dental prevention matters too. A hay-based diet helps rabbits wear their teeth normally, and routine wellness visits can catch malocclusion or tooth root problems before they lead to chronic tearing and eye irritation. If your rabbit has a history of dental disease, ask your vet how often rechecks should happen.

Watch for early signs instead of waiting for heavy discharge. Mild tearing, a pink eyelid, crusting on the front paws, or subtle squinting are good reasons to schedule an exam. Early treatment is often easier and may reduce the chance of chronic tear duct scarring or repeat infections.

If you have more than one rabbit, good hygiene also helps reduce spread of infectious causes. Wash hands between handling rabbits with eye or nasal discharge, clean bowls and litter areas regularly, and follow your vet's guidance about separating sick rabbits when contagious disease is a concern.