Why Is My Cat Squinting With One Eye โ€“ Is This Normal?

Cat eyes are charming and can convey a lot of emotions. Cats often show their affection by blinking slowly at their owners. However, if you notice your cat squinting with one eye, you may wonder why this is happening.

When a cat squints with one eye, it may be a sign of eye irritation, conjunctivitis, blepharospasm, or corneal ulcers. Additionally, anisocoria, glaucoma, and other eye-related illnesses can cause a cat to squint with one eye.

This piece will discuss the reasons behind your cat‘s one-eye squinting, along with other common inquiries and crucial details to comprehend the causes of this behavior and prevent any vision-related issues.

Reasons Your Cat Is Squinting One Eye

If your cat is squinting with one eye, it could be due to various reasons. One possibility is that your cat is suffering from eye irritation or infection. Another reason could be conjunctivitis and blepharospasm. However, squinting may also indicate more serious eye-related conditions such as anisocoria, corneal ulcers, or glaucoma.

Eye Irritation

If your cat is squinting one eye, it could be due to eye irritation caused by various irritants such as dust, strong perfumes, or smoke that can enter their eyes and cause discomfort.

In addition, something foreign may inadvertently enter your cat’s eye and cause irritation. As a result, your feline may squint its eye or rub it excessively, feeling discomfort and pain.


Conjunctivitis or pink eye is a frequent cause of your Cat’s Squinting. It is a contagious illness for felines, and it can be caused by viral or bacterial infections in the Eye.

Cats may develop conjunctivitis due to an upper respiratory illness, which can result in a discharge from the eye that is gray, yellow, or green and runny.


Cats may develop a condition called blepharospasm, which causes squinting in one eye due to redness and swelling of the eyelid. This can also lead to water discharge. The main causes of blepharospasm are eye irritation, allergies, or bacterial and fungal infections.

Corneal Ulcers

Cat squinting with one eye may indicate the presence of corneal ulcers, which can result from eye injuries, anatomical irregularities, infections, and persistent dryness of the eyes.

If you notice your cat squinting or rubbing its eyes excessively, it may be experiencing significant discomfort and could have a corneal ulcer. Seeking prompt veterinary care and treatment can effectively manage this condition.


If your cat is squinting one eye, it could indicate the presence of glaucoma, which occurs when there is insufficient drainage of aqueous fluid in the eye.

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Cats can experience glaucoma due to various factors such as anatomical irregularities, elevated intraocular pressure, prolonged eye trauma, eye tumors, and lens damage. Your feline friend may exhibit diverse indications like squinting, impaired vision, unreactive pupils, reduced appetite, lethargy, and more.

Do Cats Squint When In Pain

If your cat is experiencing pain or discomfort, it may squint one eye for an extended period of time, which could be caused by various eye-related problems such as irritation, conjunctivitis, blepharospasm, and corneal ulcers.

If your cat is experiencing discomfort, it may cause one or both of its pupils to narrow or widen. It’s crucial to schedule a visit with your veterinarian for an accurate diagnosis and appropriate treatment.

Why Is My Catโ€™s Eye Half Closed

Your cat may squint one eye for various reasons. It could be due to eye irritation or conjunctivitis caused by upper respiratory tract infections.

Cats may squint due to blepharospasm or eye-related diseases such as symblepharon, anisocoria, corneal ulcers, and glaucoma, which can cause them to constantly half-close one eye.

What Can You Do For A Catโ€™s Irritated Eye

If you notice your cat experiencing eye irritation, consider using an eye-wash solution to rinse their eyes, making sure to use separate bowls for each eye.

However, it is advisable to seek advice from your veterinarian first and confirm that the irritation is not indicative of any other feline ocular ailments. Cats can be affected by various eye irritants such as perfumes, smoke, dust, cleaning chemicals, among others. Nevertheless, any foreign object that enters your cat’s eye may cause discomfort and prompt squinting or rubbing of the affected eye.

Cat may also experience redness and discharge in addition to squinting with one eye. It is crucial to handle any discomfort related to your cat’s eyes with care, as they are a delicate part of their body.

Will A Cat Eye Infection Heal On Its Own

When a cat experiences an eye infection, it is crucial to seek professional diagnosis and treatment as it cannot resolve on its own. The infection may be caused by various factors such as conjunctivitis, upper respiratory infections, corneal disorders, epiphora, and uveitis.

Cat eye infections may result in redness, abnormal blinking, squinting, excessive tearing, and severe discomfort.

If your cat is showing signs of an eye infection, it’s important to seek veterinary care promptly to prevent potential vision loss or damage. Waiting for the infection to heal on its own is not recommended.

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Can I Give My Cat Human Eye Drops

It is not advisable to use eye drops meant for humans to cure any eye-related issues in your cat. If you notice any infections or diseases affecting their eye, it is crucial to seek the advice of a veterinarian without delay.

After the diagnosis is complete, your vet will suggest the right treatment for your pet. Even if your feline’s eyes display redness, discharge, or some minor problems, you should consult a veterinarian to help you address the issue.

Keep in mind that cat eyes are vulnerable, so it is crucial to handle any issues with great concern and caution.

What If My Cat Is Squinting One Eye And Sneezing

If your cat is squinting with one eye and sneezing, it could indicate an eye infection caused by bacteria, viruses, fungi, or parasites. Often, upper respiratory issues are the root cause of eye infections in cats.

If your feline companion is exhibiting signs such as squinting, rubbing, redness, puffiness, eye drainage, sneezing, and nasal secretion, it’s important to ensure they are getting adequate rest.

If your cat is squinting with one eye, it’s important to gently clean any discharge and ensure they have access to a nutritious diet and plenty of water. Additionally, seeking advice from a veterinarian as soon as possible is crucial.

What Could Be Wrong With My Catโ€™s Eye

Cat owners should be vigilant when they observe their pet squinting or rubbing its eyes more frequently than usual, as this could be a sign of an eye infection.

Cats commonly experience various eye issues such as eye irritation, conjunctivitis, corneal ulcers, iris discoloration, allergies, glaucoma, and more. Regularly examining your cat’s eyes is crucial to ensure they are free from these problems.

How Long Do Cat Eye Infections Last

The recovery time for cat eye infections depends on their severity, but typically bacterial and viral infections can be cured within five to fourteen days with the use of antibiotic drops or ointments, as determined by a veterinarian after proper diagnosis.

Should I Clean My Cats Eyes

If you notice a small amount of discharge in your cat’s eyes, it is acceptable to clean them using sterilized water and a warm washcloth or cotton balls. This is considered normal for cats.
If your cat‘s eyes have dirt, you can use a washcloth or cotton balls to clean them gently. It’s important to use separate bowls for each eye. However, if your cat is also experiencing symptoms such as squinting, redness, or excessive blinking with discharge, it’s recommended to take them to a veterinarian for proper treatment.

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Should I Take My Cat To The Vet For A Watery Eye

If your cat is experiencing watery eyes along with symptoms such as squinting, excessive blinking, or redness, it’s important to seek veterinary care. These signs could indicate eye infections, conjunctivitis, allergies, or other conditions related to the eye.

Cat squinting with one eye can be a sign of excessive tearing in the tear film, which is beneficial for fighting bacteria and removing debris to maintain eye health. However, if additional symptoms accompany watery eyes, it’s crucial to seek veterinary care to diagnose and treat any underlying conditions.

How Do You Treat A Catโ€™s Irritated Eye

If your cat is squinting with one eye, it may have an eye irritation caused by dust, smoke, perfume, or other strong fragrances. To treat this, you can use an eye-wash solution to gently rinse out their eyes if your cat allows it.

If your cat displays frequent blinking or abnormal squinting, seek advice from a veterinarian to alleviate your feline’s discomfort.

Things To Consider

Regarding cat squinting and eye issues, there are additional facts to consider. Your feline companion may squint in one eye due to other eye-related ailments.


Cat squinting with one eye may be caused by anisocoria, a condition where one pupil of the cat is larger than the other, leading to abnormal eye movements, redness, and discharge. This condition can indicate various issues such as retinal problems, corneal injury, posterior synechia, cancer, and in severe cases, brain damage.


Cat herpesvirus can cause symblepharon, which typically affects kittens younger than three weeks old and results in swollen, stuck-together eyes with watery discharge that may turn into pus.

Check Your Catโ€™s Eyes Regularly

Regularly inspect your cat’s eyes to ensure they are bright and shiny without any persistent squinting, excessive blinking, or discharge. Since the eyes are highly sensitive areas for your feline companion, seek advice from a veterinarian if anything appears unusual.

You can also check this YouTube video about this topic:

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