Cat-Eye Syndrome

Cats: they have conquered our hearts, not to mention the Internet. Some people love cats so much that we have no doubts they wouldn’t mind having this mind-boggling condition. Appropriately known as the cat-eye syndrome, this rare eye abnormality causes humans to have feline-like eyes.

In many cases, individuals affected by cat-eye syndrome only display cat-like characteristics in one eye. This condition is caused by a permanent change to a chromosome, which means it’s incurable. If you’ve never seen a person with eyes that look like this, don’t worry: the abnormality only affects roughly one in 150,000 people.