The principle of amblyopia treatment is early detection and early treatment. If the treatment time is missed, it will affect the treatment effect and even delay the treatment. So how to early detection of amblyopia in children? 1, usually parents should pay attention to observe whether the baby has squinting eyes, look at things close, have squinting eyes, watch TV crooked head and other phenomena. If abnormalities are found, be sure to go to the hospital for further examination. 2, preschool physical examination: before the child goes to kindergarten at the age of 3, he or she needs to go to the hospital for a vision examination and, if necessary, an optometry and dilated pupil examination to further confirm the diagnosis. In conclusion, early detection of amblyopia depends mainly on the parents, and regular checkups at the hospital are required.