Dizziness and blurred vision are mainly seen in the following aspects: 1. Acute cerebrovascular disease or intracranial inflammation. If the patient has acute dizziness accompanied by blurred vision, diplopia, rotating vision, nausea, vomiting, or accompanied by fever, and the patient’s eye movement can be seen as impaired or accompanied by one side of the mouth, and the ataxia examination is not permitted by the finger-nose test, the patient should be considered to have hemorrhage or infarction of the brain stem. 2. If the dizziness and blurred vision are chronic, it may be a tumor in the brainstem or anterior cranial fossa, which requires cranial CT or magnetic resonance examination to clarify the nature of the lesion. 3. Ophthalmology disease itself, because the visual impairment may cause dizziness or unsteady walking, and it is necessary to go to the ophthalmology department to do the relevant examination to clarify the cause.