Feline Eosinophilic Keratitis: A Quick Guide What to Know About Eosinophilic Keratitis In Cats

Feline Eosinophilic Keratitis: A Quick Guide Photo by Halil Ibrahim ร‡ETIN : https://www.pexels.com/photo/close-up-photo-of-a-curious-calico-cat-2064110/

Feline eosinophilic keratitis is a rare but deadly illness that affects the eyes of cats. Learn more about this in this article.

The disorder known as feline eosinophilic keratitis, which affects cats' eyes, is uncommon yet severe. It is characterized by inflammation and an overgrowth of eosinophils, a kind of white blood cell, in the cornea, the transparent outer layer of the eye. This condition can cause severe pain, sensitivity to light, and vision loss if left untreated. 

In this article, we will discuss the causes, symptoms, and treatment options for feline eosinophilic keratitis, as well as ways to prevent it from occurring in your cat.

Causes of Feline Eosinophilic Keratitis

Although the precise origin of feline eosinophilic keratitis is unknown, it is generally accepted to be an immune-mediated condition. The cornea is incorrectly identified by the immune system as a foreign intruder, causing white blood cells known as eosinophils to assault it. The cornea gets harmed and inflamed as a result.

Some cats may develop eosinophilic keratitis as a result of exposure to certain allergens, including dust, pollen, and mold. Also, parasitic illnesses brought on by mites or worms may have a role.

Further, some cats may have a genetic predisposition to developing eosinophilic keratitis. Eosinophilic keratitis can also be brought on as a side effect of some medicines, such as those used to treat other eye disorders.

Further, it is possible that a combination of factors, such as environmental allergens and a genetic predisposition, may be responsible for the development of eosinophilic keratitis in some cats.


The symptoms of feline eosinophilic keratitis can vary depending on the severity of the condition and how long it has been present. Typical signs include:

  • Redness and inflammation of the eye

  • Eye discharge

  • Light sensitivity

  • Squinting or shutting off the eye

  • Cloudiness or opacity of the cornea

  • Pain and discomfort

  • Decreased vision or blindness

Some cats may not show any obvious signs of discomfort, despite having severe eosinophilic keratitis. In such cases, it is essential to have regular eye exams by a veterinarian to catch the condition early.


Medications and supportive care are often used in conjunction to treat feline eosinophilic keratitis. The goal of treatment is to reduce inflammation, remove eosinophils from the cat’s cornea, and prevent further damage to the eye.

The most common medications used to treat eosinophilic keratitis include:

It's important to note that treatment for eosinophilic keratitis is often long-term and may require frequent rechecks and adjustments to medications.

How to Prevent Eosinophilic Keratitis In Cats

Preventing eosinophilic keratitis in cats can be challenging as the exact cause of the condition is not fully understood. The chance of the illness developing can be reduced, nevertheless, by taking the following steps:

  • Allergen control: If your cat has a history of allergies or is known to be sensitive to certain allergens, it is important to control exposure to these allergens as much as possible. This may involve using air purifiers, frequent vacuuming, and limiting outdoor exposure.

  • Parasite control: Regularly treating your cat for parasites, such as mites and worms, may help to prevent eosinophilic keratitis from developing.

  • Regular veterinary checkups: Regular eye exams by a veterinarian can help to detect eosinophilic keratitis in its early stages when treatment is most effective.

  • Medication Management: Be aware of the side effects and possible complications of the cat’s medication. If your cat is taking medication that may increase the risk of developing eosinophilic keratitis, your veterinarian may recommend alternative treatment options.

However, cats that have a genetic predisposition to developing eosinophilic keratitis may be at higher risk of developing the condition and may require more frequent monitoring and treatment.

In conclusion, it can be difficult to prevent eosinophilic keratitis, but adopting precautions like avoiding allergens and parasites, seeing the vet often, and being aware of the medications your cat is on will help reduce the risk.

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