Level 1: Symptoms and causes of cross-eyes in babies Cross-eyes, also called strabismus, is a common eye disease in children. The main symptom of cross-eyes in babies is that both eyes cannot look at the same object at the same time, resulting in out-of-sync vision, double images or blurred images. This situation can affect the child\’s learning, living and social abilities. There are many reasons for cross-eyed babies, the most common of which are congenital strabismus, myopia, amblyopia, etc. In addition, staring at electronic screens for long periods of time, lack of outdoor activities, excessive eye use, etc. may also lead to strabismus. Level 2: