The causes of headache and unclear eye vision need to be divided into situations, as follows: First, unclear vision and then headache: this condition is usually aura migraine or glaucoma, if frequent, stereotypical attacks, first unclear eye vision and then headache, headache followed by blurred eye vision relief, generally this condition is migraine. If the blurred vision and headache persist, it is considered to be glaucoma, and it is necessary to go to ophthalmology to measure the intraocular pressure. Second, headache and then unclear vision: Consider cerebrovascular disease, occipital lobe hemorrhage or infarction, need to do cranial examination, cranial MRI or cranial CT can be judged.