The sequelae of brain infarction in the left occipital lobe are visual disorders such as hemianopsia, decreased visual acuity or visual field defects. The occipital lobe belongs to the visual cortex center, if the patient’s brain infarction site is in the left occipital lobe, the sequelae of visual disorders such as ocular hemianopsia, decreased visual acuity, visual field defects and blurred vision may occur. Generally, it can be manifested as isotropic hemianopsia on the right side of both eyes, inability to see objects placed on the right side, and walking to the left side. There may also be blurred vision or visual hallucinations. Cerebral infarction in the occipital lobe usually does not affect the patient’s motor, sensory or speech functions. Therefore, if a patient has a cerebral infarction in the left occipital lobe, he/she should go to the hospital in time for consultation and active treatment to avoid adverse effects.