This invention provides a method which has resistance to variation of background light, and resistance to position offset of camera, and which allows a long-time wearing and can easily detect movements, such as moving direction or the likes, of eyeball. The method for detecting eyeball movement includes, in an information processing device, detecting an area of the white of the eyeball from an area of the eyeball, determining a blood vessel image to become a template, detecting the Nth matching blood vessel image which is matched with the template blood vessel image, calculating the Nth movement of the eyeball from the difference between the Nth matching blood vessel image and the template blood vessel image, and calculating the Nth rotation angle of the eyeball from the difference between the Nth detected angle and the reference angle.本發明係提供可承受背景光的變化，亦可承受攝像機的位置偏移，可長時間穿戴，易於檢測出眼球移動方向等的運動的方法。一種檢測眼球運動的方法，係在資訊處理裝置中，從該眼的區域檢測出該眼中的眼白區域，從眼白區域決定成為樣板的血管影像，檢測出與樣板血管影像匹配的第n個匹配血管影像，從與該第n個檢測位置的差來運算眼球的第n個移動量，從前述基準角度與前述第n個檢測角度的差來運算眼球的第n個旋轉角度。
