Depth perception and peripheral vision (vision off to the side) may be affected. It can cause eyestrain and headaches. If your eyes cross when you're older, you may start to turn your head to see in certain directions and avoid double vision.

How do crossed eyes affect vision?

When the eyes are misaligned, the brain receives two different images. At first, this may create double vision and confusion. But over time the brain will learn to ignore the image from the turned eye. Untreated, eye turning can lead to permanently reduced vision in one eye.

What does cross eyed vision look like?

When a kid has strabismus, the eyes don't focus together on the same object and each eye sends a different picture to the brain. As a result, the brain might see two images (double vision) or the object looks blurry. Kids' brains are really smart, and they don't like getting two different pictures instead of one.