There are different ways to treat it. Some people just need to wear glasses. Others may need surgery. People who have lazy eyes may need to wear a patch over the good eye to strengthen the weaker one. Starting treatment as soon as possible is advised. To understand what happens here first you need to know a little bit about the eye. The eye is like a camera and the back of the eye, called the retina, is the film. Objects that your eyes see are projected onto the retina, and these pictures are sent to the brain by nerve signals. The brain detects these signals, puts them together to form an image, and that’s how you see. It all happens so quickly in a split second!
When a someone has this, 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 making it blurry.
The human brain is so smart, and it doesn’t like getting two different pictures instead to fix the problem, the brain may ignore the picture coming from the one eye so it gets only one clear image. By shutting off the bad eye in favor of the good one, the bad eye gets weak or lazy (causing amblyopia), and without treatment the bad eye might eventually even become blind.