Cervical spondylosis is a common clinical condition that often causes eye symptoms such as blurred vision, decreased vision, eye swelling and pain, photophobia and tearing, and weakness in opening the eyes, and can even result in reduced visual field and sharp loss of vision. Therefore, it should be taken seriously by doctors in clinical practice. When a patient has the above symptoms and the specialist cannot find the appropriate explanation, the possibility of cervical spine pathology cannot be ruled out. These patients also often have symptoms such as dizziness and headache, neck pain, numbness in the fingers, and weakness in holding objects. These eye disorders caused by cervical spondylosis are called cervical visual impairment. Clinical cervical visual impairment is common in the following cervical spondylosis 1, spinal cord type cervical spondylosis: due to cervical disc degeneration or protrusion, or yellow ligament hypertrophy, vertebral body edge and small joint hyperplasia and other reasons to make the cervical spinal canal narrowing, compression in the dural sac and spinal cord, resulting in cerebrospinal fluid circulation obstruction, poor flow, resulting in increased intracranial pressure, optic papilla edema, retinal atrophy, which in turn affects vision. Other symptoms can be seen as numbness and weakness of the upper and lower limbs, easy to drop things, unstable or difficult to walk, and the feeling of stepping on cotton under the feet. 2.Vertebral artery type cervical spondylosis: As the vertebral artery travels through the transverse foramen of the cervical spine, the blood vessels are stuck, twisted or pulled, resulting in insufficient blood supply to the visual center of the cerebellum and occipital lobe of the brain, causing blurred vision, blurred vision and blinding in the lighter cases, and vision loss and blindness in the heavier cases, which sometimes last for several minutes and recover on their own. In addition, dizziness and headache, nausea and vomiting, sweating, tinnitus, and even sudden collapse may occur. 3.Sympathetic cervical spondylosis: Due to the stimulation of the sympathetic nerve in the neck, its function is disturbed, causing eye swelling and pain, photophobia and tearing, blurred vision, dry eyes, sunken eyes, dilated pupils and so on. This type is rarely seen alone in clinical practice and often exists in combination with other types. The incidence of type II and III is higher, and they are often combined to become the main cause of cervical visual impairment. Ophthalmologic examinations of such patients often do not reveal obvious causes, and most of them are treated with massage for cervical spondylosis, and their visual acuity will improve to varying degrees and their clinical symptoms will be relieved or disappear. A relatively small number of patients need surgery, especially those with spinal cord cervical spondylosis. Therefore, the disease is in the eyes, the root is in the cervical spine, from the neck theory of treatment, can receive good results.