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 effect is not very satisfactory. 1.Total blindness in both eyes; 2.Pupillary light response is intact; 3.Fundus is normal, VEP examination is abnormal. Western medicine believes that cortical blindness is caused by visual cortical lesions. It has the following characteristics: 1) double blindness, including no transient response to intimidation and bright light in light and darkness, and no tracking of objects; 2) no optic nerve atrophy in the fundus, and the retina maintains normal structure; 3) the presence of light reflex and convergence reflex (the reflexes of convergence (convergence) and pupil narrowing (adjustment) when gazing at near objects); 4) free eye movements; 5) cortical blindness denies blindness, memory and orientation disorders ⑤ cortical blindness denies blindness, memory and disorientation, and mental abnormalities such as hallucinations. Etiology: There are many clinical causes of cortical blindness, the most common causes are cerebrovascular lesions, inflammation, demyelination, tumors, craniocerebral trauma, carbon monoxide poisoning, transient cardiac arrest, post-epileptic seizures, post-cesarean section, hypoxia during delivery, and other rare causes such as organic mercury poisoning, complications of cerebral angiography, cerebral leukomalacia after organ transplantation, and complications of acute glomerulonephritis. Occipital cortical blindness can be divided into 3 types according to clinical manifestations: (1) simple visual impairment: manifested by blurred vision, hemianopsia or blindness, other visual symptoms and visual field defects, without other neurological symptoms and signs; (2) visual impairment with symptoms and signs of other cerebral hemispheres, such as hemiparesis, hemianesthesia and aphasia; (3) visual symptoms with sub-screen symptoms: such as vertigo, nystagmus and ataxia, etc. Treatment: Acupoint injection combined with acupuncture stimulation can increase local blood flow, change the ischemic and hypoxic state of cerebral cortex, improve the oxygen uptake capacity of brain tissue, and promote the repair of damaged neurons. It can activate brain cells and promote brain cell function compensation. The healing process of cortical blindness is poor, but early treatment is effective.