The thrombosis of the posterior circulatory arteries, which the patient develops, is little known. Dizziness, blurred vision, and sudden blindness with a short recovery time are the result of a thrombosis of a blood vessel in the posterior circulation of the brain. The blood supply to the visual cortex is mainly supplied by the posterior cerebral artery, and when the posterior cerebral artery is clogged, blindness occurs, which is medically referred to as “transient darkness”. How is the disease diagnosed clinically? Neuroimaging and non-invasive Doppler ultrasonography: to determine whether the patient’s brain tissue has been damaged. 2. Blood tests: to assess how fast the blood is clotting. 3, Electrocardiogram: to determine if the patient has had a heart attack or if there is a heart rhythm disorder. Active preventive treatment is also needed; finally, education about stroke risk factors and symptoms, such as diet education, exercise therapy education, medication education, mental health education, functional training education and discharge guidance.