Lazy Eye (Amblyopia): Everything You Need To Know Many parents notice their child struggling with vision or favoring one eye. This often leads to the question: What causes a Lazy Eye condition? Amblyopia, commonly known as Lazy Eye, occurs when the brain and one eye fail to work together properly. https://www.tumblr.com/healpedia/819012801057177600/what-is-lazy-eye-amblyopia-and-how-is-it