Epiphora in Cats

See your vet immediately if your cat has a watery eye plus squinting, redness, cloudiness, swelling, a closed eye, or signs of pain. Epiphora is the medical term for tears that overflow from the eye onto the fur and face. In cats, this happens when the eye makes too many tears, the tears cannot drain through the normal tear duct system, or both. Pet parents often notice damp fur below the eye, reddish-brown tear staining, or a face that always looks wet.

Epiphora is a sign, not a diagnosis. The underlying problem may be mild, such as temporary irritation from dust, or more serious, such as a corneal ulcer, eyelid abnormality, infection, or chronic viral eye disease. Flat-faced breeds like Persians and Himalayans are more likely to have lifelong tearing because their facial shape can interfere with normal tear drainage. Even in those cats, though, a sudden change in tearing should not be ignored.

Cats with epiphora may have one affected eye or both. One-sided tearing can raise concern for a blocked tear duct, foreign material, trauma, or a localized eye problem. Two-sided tearing is more often seen with conjunctivitis, upper respiratory infections, allergies or irritants, and breed-related facial structure. Because many eye conditions look similar at home, your vet usually needs to examine the eye directly before treatment starts.

The good news is that many causes of epiphora can be managed well once the reason is identified. Early care matters. Eye pain can be subtle in cats, and delaying an exam can allow ulcers, infection, or inflammation to worsen.

Your vet will start with a full eye exam and a careful history. Helpful details include whether one eye or both are affected, how long the tearing has been present, whether it is seasonal or constant, and whether your cat also has sneezing, nasal discharge, or a history of feline herpesvirus flare-ups. Breed and facial shape matter too, because brachycephalic cats often have chronic drainage problems.

During the exam, your vet may look for eyelid abnormalities, hairs rubbing the cornea, conjunctivitis, foreign material, corneal injury, and changes in the clarity of the eye. A fluorescein stain test is commonly used to check for corneal ulcers or scratches. Depending on the findings, your vet may also assess tear drainage through the nasolacrimal system, sometimes by flushing the duct if blockage is suspected.

If infection is possible, your vet may recommend testing based on the pattern of disease. In cats with conjunctivitis, especially in multi-cat settings or recurrent cases, testing for organisms such as Chlamydia felis or evaluation for feline herpesvirus-related disease may be discussed. More advanced workups can include eye pressure testing, imaging, sedation for a more complete eye exam, or referral to a veterinary ophthalmologist when the cause is not clear or the problem keeps returning.

Because many eye medications are not safe for every eye condition, diagnosis should come before treatment whenever possible. For example, some medications are avoided if a corneal ulcer is present. That is one reason home treatment with leftover eye drops is risky.

Epiphora has two broad mechanisms: too much tear production or poor tear drainage. Excess tearing often happens when the eye is irritated or painful. Common triggers include conjunctivitis, feline herpesvirus flare-ups, upper respiratory infections, corneal ulcers, keratitis, foreign material, trauma, and eyelid hairs rubbing on the eye. Cats with painful eye disease may also squint, blink more, or avoid bright light.

Poor drainage happens when tears cannot move normally through the nasolacrimal ducts into the nose. This can occur because the ducts are blocked by inflammation, debris, or rarely a mass, or because the cat was born with abnormal drainage anatomy. Hair around the inner corner of the eye can also interfere with drainage. In flat-faced breeds, the shape of the skull and eyelids can make chronic tearing more likely even without active infection.

Risk factors include Persian or Himalayan facial structure, a history of feline herpesvirus infection, living in multi-cat environments where infectious eye disease spreads more easily, and chronic eyelid or corneal problems. Young cats are more likely to develop some infectious causes of conjunctivitis, including Chlamydia felis. Cats with recurrent respiratory disease may also have repeated bouts of watery eyes.

Not every watery eye is serious, but some causes are. Corneal ulcers, glaucoma, uveitis, and severe conjunctivitis can all include tearing. That is why epiphora should be treated as a clue that the eye needs a closer look, not as a cosmetic issue alone.

Not every case of epiphora can be prevented, especially when facial structure is the main reason. Still, early attention to eye changes can prevent a mild problem from becoming a painful one. If your cat is prone to tearing, gently wiping away moisture and debris can help reduce skin irritation and matting below the eye. Use only products your vet recommends for the eye area.

Keeping up with routine veterinary care and core vaccination discussions may lower the risk of some infectious causes linked to upper respiratory disease, including feline herpesvirus and calicivirus. In multi-cat homes, shelters, and breeding settings, reducing crowding, improving hygiene, and isolating sick cats can also help limit spread of contagious eye and respiratory infections.

Try to reduce exposure to irritants such as smoke, dusty litter, aerosols, and strong cleaning fumes. Long facial hair near the eyes may need careful grooming in some cats. Never use human eye drops or leftover pet medications unless your vet specifically tells you to. The wrong product can worsen ulcers or delay proper treatment.

The outlook depends on the cause. Cats with mild irritation, uncomplicated conjunctivitis, or temporary upper respiratory flare-ups often improve well with timely care. When a blocked tear duct can be opened or the underlying inflammation is controlled, tearing may decrease substantially. Some cats, especially flat-faced breeds, may continue to have some degree of lifelong tearing even when the eyes are otherwise healthy.

Recovery can take days to weeks. Corneal ulcers, herpesvirus-related eye disease, and chronic conjunctivitis may need repeated rechecks because signs can recur. Cats with feline herpesvirus can have lifelong latent infection, so stress or illness may trigger future episodes of watery eyes and conjunctivitis. That does not mean every flare is severe, but it does mean long-term management may be part of the plan.

Prognosis is more guarded when epiphora is linked to deep corneal ulcers, severe eyelid abnormalities, chronic scarring, glaucoma, uveitis, or masses affecting drainage. In those cases, early diagnosis and referral can make a meaningful difference. The best outcomes usually happen when pet parents seek care before the eye becomes very painful or cloudy.