Children with strabismus often exhibit the following: 1. They like to squint one eye in the sunlight because they want to exclude the visual disturbance caused by the deviated eye; 2. They have abnormal facial position when looking at things, deviating to the left or to the right, inward or upward lifting of the jaw, and deviating their head to the left shoulder or to the right shoulder. The child uses these head and face changes to reduce diplopia due to strabismus. Abnormal head and face positions over time can result in strabismus, scoliosis, and inconsistent facial development. It is important for every parent to watch their child for eye deviation and strabismus. Squinting is a manifestation of strabismus, but of course squinting is not only related to strabismus, but also to abnormal development of the muscles in the neck. Therefore, it is important to take your child to the hospital for ophthalmology and surgery if you find that he or she has a crooked neck, which is mostly caused by eye diseases.