Why Do Siamese Cats Have Crossed Eyes

Why Do Siamese Cats Have Crossed Eyes?

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Last Updated on February 23, 2023 by Pauline G. Carter

Siamese cats are one of the most popular cat breeds in the world. They are known for their blue eyes, pointy ears, and slender bodies. But one of the most distinguishing features of Siamese cats is their crossed eyes.

Some people think that crossed eyes give Siamese cats a cute, goofy appearance. But why do Siamese cats have crossed eyes? The answer may lie in their genes.

A mutation in a gene called CFA27 is responsible for causing crossed eyes in Siamese cats. This gene is also responsible for other physical traits characteristic of Siamese cats, such as their long bodies and short legs. The CFA27 mutation occurred naturally in some earlySiamese cats and was then passed down to future generations.

Siamese cats are one of the most popular cat breeds, and they are known for their unique physical appearance. One of the most distinguishing features of Siamese cats is their crossed eyes. While it may look like a defect, there is actually a reason why Siamese cats have crossed eyes.

The crossing of the eyes is caused by a condition called strabismus, which affects the muscles that control eye movement. In Siamese cats, the condition is caused by a genetic mutation that results in reduced muscle function. This mutation is thought to be responsible for other physical traits seen in Siamese cats, such as their long bodies and slender legs.

While strabismus can cause some problems with vision, most Siamese cats adapt well and don’t seem to be bothered by it. In fact, many people find the crossed eyes to be one of the endearing qualities of this breed!

Why Do Siamese Cats Have Crossed Eyes?

Credit: www.thesprucepets.com

Are Siamese Cats Normally Cross-Eyed?

Siamese cats are a unique breed of cat that is known for their striking blue eyes and slender bodies. One of the most distinguishing features of Siamese cats is their crossed eyes. This characteristic is so prevalent in the breed that it is often considered to be a defect.

However, recent studies have shown that this trait is actually due to a genetic mutation that occurred during the development of the Siamese cat breed. While there is no definitive answer as to why Siamese cats are born with crossed eyes, there are several theories that have been proposed. One theory suggests that the crossing of the eyes is caused by pressure on the optic nerves from the skull structure of Siamese cats.

Another theory posits that crossed eyes are an evolutionary adaptation that allows Siamese cats to see better in low-light conditions. Regardless of the cause, crossed eyes are simply a physical characteristic of Siamese cats and do not affect their vision or health in any way.

What Does It Mean When a Cat is Cross-Eyed?

When a cat is cross-eyed, it means that their eyes are not pointing in the same direction. This can be due to a number of different things, including an injury, a birth defect, or even just genetics. While it may not seem like a big deal to us humans, it can actually be quite harmful for cats as it can affect their depth perception and make them more prone to accidents.

If you notice that your cat is cross-eyed, it’s important to take them to the vet so they can get checked out and determine the cause.

Do All Siamese Cats Have Strabismus?

No, not all Siamese cats have strabismus. Strabismus is a condition where the eyes don’t line up properly and can point in different directions. It’s sometimes called “crossed eyes.”

Some Siamese cats do have strabismus, but it’s not considered a breed standard and isn’t required for the cat to be considered a Siamese.

Do Cross-Eyed Cats Have Vision Problems?

There is a common misconception that cats who are cross-eyed have vision problems. However, this is not always the case. Many cross-eyed cats actually have perfect vision.

The condition is caused by a misalignment of the eyes, which can be due to a number of factors, including genetics. The good news is that, in most cases, cross-eyed cats do not experience any discomfort or pain as a result of their condition. And, while some may require corrective surgery to align their eyes properly, many live happy and healthy lives without any treatment at all.

The Delightful Mutation Behind Siamese Cats

Why Do Cats Have to Cross Their Eyes to Correct This Problem

If you’ve ever looked at a cat and wondered why their eyes sometimes seem to be crossed, you’re not alone. It’s a common condition called strabismus, and it affects both cats and humans. The condition is caused by the muscles that control the eye not working together properly.

This can happen for a variety of reasons, including an injury, infection, or even just genetics. While it may look funny, strabismus can actually cause some serious problems for cats if it’s not corrected. For one thing, it can lead to amblyopia, or “lazy eye.”

This happens when the brain starts to ignore signals from the eye that isn’t working correctly. If left untreated, amblyopia can cause permanent vision problems. Strabismus can also make it difficult for cats to judge distances accurately.

This can lead to them jumping at things that are further away than they appear to be, or missing jumps altogether because they misjudged the distance. Fortunately, there are treatments available for cats with strabismus. One option is surgery, which involves correcting the position of the muscles around the eye.

Another option is wearing an eyepatch over the stronger eye to force the weaker one to work harder.


There are a few reasons why Siamese cats have crossed eyes. One reason is that they have a genetic mutation that causes their eyes to be misaligned. Another reason is that they often have problems with their vision, which can lead to crossed eyes.

Finally, Siamese cats tend to be born with crossed eyes, but they usually grow out of it by adulthood.

About Author (Pauline G. Carter)

Pauline G. Carter

Pauline G. Carter is a well-known pet blogger who has written about the world of pets for several years. She is passionate about pets, from cats and dogs to birds, reptiles, and poultry. Her blog, which is updated regularly, is filled with articles and guides on pet care, nutrition, and training. She also shares her experiences and observations on pet ownership, making her blog relatable and informative for pet lovers. She is a true animal advocate and is dedicated to promoting responsible pet ownership. Let’s Go …

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