Children with a crooked neck should seek early medical attention. A crooked neck is commonly referred to as a crooked neck. Patients with a crooked neck often go to surgery. In fact, some cases are caused by eye disease, called ophthalmic squint, and surgical intervention for this type of squint will not help. There are generally two types of squint: myelomeningocele and ophthalmic squint. Myelomeningocele is a common surgical condition, and its incidence is much higher than that of ophthalmic squint, and patients often seek surgical treatment. In congenital myelomeningocele, the sternocleidomastoid muscle becomes sclerotic and muscle contracture occurs after a neck injury during childbirth, forcing the head to tilt to one side. This type of squint requires neck surgery to loosen the contracted muscles in order to correct the head position. Ophthalmic strabismus is caused by paralytic vertical strabismus. In this type of patients, the ocular muscle is paralyzed and the extraocular muscles are unbalanced, resulting in impaired eye movements, high eye position and low eye position, visual dysfunction such as amblyopia, lack of stereo vision, and sometimes diplopia. Patients often tilt their heads to one side in order to obtain binocular monocular function or to avoid diplopia. The main characteristic of paralytic vertical strabismus is that the strabismus disappears when one eye is covered or when the function of the eye muscles can be corrected. The other type of ocular strabismus is caused by refractive error. This type of strabismus is mostly caused by obvious congenital oblique axis astigmatism, which is more obvious when the patient looks at a fixed target, and the head is tilted to one side to see the target clearly. This type of squint does not require surgery and can be cured with moderate astigmatism glasses.