There are a lot of people who have cerebral funcional disorders. They are Alzheimer¡Çs disease, schizophrenia, ADHD and so on.Early diagnosis and early treatment are important to these disorders.So we examined the availability of Eye-Sensing HMD for diagnosing cerebral functional disorders as medical screening test for their early diagnosis. But we found some practical difficulties of using this system at clinical examination.The purpose of this study is , thereffore, imporoving our system toward the practical use of our system, and evaluation our system.