Cortical blindness, also known as cerebral blindness, is blindness caused by a lesion in the visual area of the brain, where the pupil’s reflex to light is present and the fundus is normal but there is no visual function. Cortical blindness due to hypertensive disorders of pregnancy causes complete loss of vision in both eyes, resulting in sudden loss of vision in both eyes. The incidence of cortical blindness due to hypertensive disorders of pregnancy is rare, but headache and loss of vision in pregnant women can be used as a diagnostic basis for early diagnosis and treatment. There are many causes of cortical blindness, such as injury, inflammation, vascular damage, poisoning, etc. Among them, vasospastic damage is common, resulting in hypoxia of the cerebral cortex in this area. The main clinical features are complete loss of vision in both eyes, normal pupillary light reflex and normal fundus. It is sometimes accompanied by hemiparesis, aphasia, blowing and vomiting, and sensory disturbances. Regarding the treatment, it depends mainly on what causes it: children often have different degrees of organic brain lesions, especially those with a history of convulsions (such as recurrent febrile convulsions, epilepsy), with apnea (prematurity at birth is common), generalized muscle spasms (tetanus), severe hypoxia (birth asphyxia, gas poisoning), acidosis (severe diarrheal shock), the cerebral cortex is most sensitive to hypoxia, the cortical center of vision The cerebral cortex is most sensitive to hypoxia, and the cortical center of vision is located in the occipital lobe of the brain, and the occipital lobe of the brain is located in the marginal area of the brain blood supply, which is particularly sensitive to cerebral hypoxia, so hypoxia and cerebral edema are the main causes of blindness. Cortical blindness is a central visual dysfunction caused by toxins affecting the occipital cortex of the brain or vasospastic ischemia, with vasospastic damage being the most common. Clinical manifestations include complete loss of vision in both eyes, normal pupillary light reflex, normal fundus, and may include hemiplegia. The disease is common in children aged 2 to 6 years. Modern western medicine generally uses corticosteroids and vasodilator drugs, but the efficacy is not very satisfactory. Where cerebral hypoxia and cerebral edema are severe, cortical blindness is difficult or irreversible to recover, and hyperbaric oxygen and acupuncture are more effective in treating cortical blindness. Surgical treatment of cortical blindness generally requires the following procedures: photoreceptor stimulation in the darkroom by turning on and off the lights -> black and white outline slides on the wall of the darkroom -> A3 size black and white outline drawings -> A4 size word cards -> A4 size phrases -> A4 size home made book, which can eventually restore the eyes to normal.