Why Is My Cat Squinting With One Eye?

If you’ve noticed your cat squinting with one eye, it’s natural to be concerned. Cats are skilled at hiding discomfort, so any visible sign of distress is worth investigating. Squinting with one eye can indicate anything from a minor irritation to a more serious underlying health condition.

This is not like the double eye squint – which means your cat loves you!

Let’s take a look at the potential reasons why your cat is squinting, symptoms to watch, and what you can do to help your favorite feline.

Common Causes of Why Your Cat Is Squinting in One Eye

Below are some of the most common causes that your cat is squinting with one eye:

Eye Irritation or Foreign Object

Cats are curious creatures, often poking their noses and faces into tight spots. Dust, debris, or small foreign objects like plant matter can get trapped in their eyes, causing irritation. Squinting in one eye may simply indicate their attempt to protect it from further discomfort.

Eye Infection

Your cat might have just a minor eye infection. Or if it is more serious, your cat could potentially have a bacterial or viral infection, such as feline herpesvirus, which can cause symptoms like squinting, discharge, and redness. These infections are more common in cats with weakened immune systems, such as kittens or elderly cats.

Corneal Ulcer or Scratch

The cornea is the transparent front layer of the eye, and scratches or ulcers can result from fights, rough play, or contact with sharp objects. These injuries are typically painful, and squinting is a reflex to reduce pain and exposure to light.

Conjunctivitis (Pink Eye)

Conjunctivitis, or inflammation of the thin membrane lining the eyelid and eye surface, is a common condition in cats. It may cause redness, swelling, discharge, and squinting in one or both eyes. Allergies, infections, or irritants often trigger conjunctivitis.

Glaucoma or Increased Eye Pressure

Glaucoma is a condition that occurs when fluid builds up in the eye, leading to increased pressure. This can cause pain, squinting, and sometimes visible cloudiness in the eye. Left untreated, glaucoma can lead to vision loss.

Uveitis (Inflammation of the Eye’s Interior)

Uveitis is a painful inflammation affecting the middle layer of the eye, often linked to infections, trauma, or systemic diseases. Cats with uveitis may squint, experience light sensitivity, and exhibit noticeable changes in their eyes, such as discoloration.

Dry Eye Syndrome

Also known as keratoconjunctivitis sicca, dry eye occurs when the tear glands fail to produce enough tears. This leads to irritation, squinting, and discharge. Cats with dry eye often appear to be in discomfort due to the lack of lubrication.

Allergies

Cats can develop allergies to pollen, dust, or other environmental factors. Allergic reactions often lead to eye irritation and squinting, along with sneezing or skin itching. While this is less common, if it occurs during the spring, it could indicate an allergy.

Tumors or Growths

Though less common, tumors or growths in or around the eye can cause discomfort, swelling, and squinting. Of course, either would require immediate veterinary attention.

Signs to Look For

If your cat is squinting with one eye, monitor them for other symptoms that can help provide you with why this is occurring:

Discharge: Clear, watery, or colored eye discharge may indicate infection or injury.

Swelling: Puffiness around the eye could suggest an allergic reaction or trauma.

Redness: Inflammation is often accompanied by redness in or around the eye.

Pawing or Scratching at the Eye: This behavior suggests discomfort or irritation.

Changes in Eye Appearance: Cloudiness, discoloration, or a visible object in the eye are important signs.

When Should You See A Vet?

While some minor irritations may resolve on their own, it’s important to contact your veterinarian if:

• If the squinting persists for more than a day.

• There is noticeable swelling, redness, or discharge.

• Your cat is in visible pain or seems lethargic.

• Your cat’s eye appears cloudy or has a sudden change in color.

• Your cat’s vision seems impaired.

It can be really important to see your vet as soon as possible who can diagnose the issue properly, can help prevent further complications and ensure your cat’s comfort.

Diagnosing and Treating the Problem

At the vet’s office, a thorough eye examination will help identify the cause of the squinting.

Diagnostic tools may include:

Fluorescein Staining: To detect corneal ulcers or scratches.

Tear Production Tests: To check for dry eye syndrome.

Pressure Testing: To diagnose glaucoma.

Blood Tests: To rule out systemic diseases like infections.

The Treatment Your Vet Provides Will Depend on the Diagnosis:

Irritation or Foreign Objects: The vet may flush the eye and recommend lubricating drops.

Infections: Antibiotics or antiviral medications may be prescribed.

Injuries: Protective collars, pain relief, or surgery might be necessary.

Chronic Conditions: Glaucoma or uveitis may require long-term management with medications.

Home Care and Prevention

While waiting for a veterinary appointment, you can take steps to keep your cat comfortable:

• Try using a soft, damp cloth to clean any discharge around the eye gently.

• Avoid letting your cat rub or scratch the affected eye.

• Make sure your cat’s surroundings are free from irritants like strong cleaners or dust.

Final Thoughts

When your cat squints with one eye, it is often your cat’s way of signaling discomfort. While some causes are minor, others may require immediate attention to prevent long-term issues. Observing your cat’s behavior, identifying accompanying symptoms, and seeking timely veterinary care will ensure they remain healthy and comfortable.