Symptoms of insufficient cerebral blood supply to the eyes mainly manifest as blurred vision, rotated vision, diplopia, visual field defects, partial blindness, etc., which require timely consultation. In case of insufficient blood supply to the anterior circulation of the brain, transient black haze, blurred vision and rotated vision may occur, mainly due to the middle cerebral artery branching out the ophthalmic artery, and when the blood supply to the ophthalmic artery decreases or is interrupted, the above symptoms may occur. In case of insufficient blood supply to the posterior cerebral circulation of the brain, symptoms such as diplopia, visual field defects, and hemianopsia are considered to be caused by insufficient blood supply to the posterior cerebral arteries, which may be accompanied by vertigo. In addition to ocular symptoms, cerebral blood supply insufficiency may also present clinical symptoms such as headache, dizziness, memory loss, and lack of concentration. If the above symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to identify the cause and give targeted treatment.