Vogbox – Video Oculography

Eye tracking and measurement of eye movement’s parameters is for the research and diagnosis of affection eye muscle, mental defect and neural illnesses very important. Nowadays there are many ways of assessing eye movements [1]. There are sclera search coils measurements, electrooculography, infra-red oculography, and the most modern videooculography. Videooculography (VOG) uses a camera to track the eye movements. If the camera is mounted on patient’s head, the relative eye position to head is measured, and then must be head position tracked, too. But if camera is mounted independently, the eye must be hold in camera’s view and differentiate the eye from the head movements. With the development of video and image analysis technology, various methods of automatic extracting the eye position from images of the eye have been developed. [4] The developed device works on the principle of videooculography, the patient is visually stimulated by LCD display and his eye movements are tracked with CMOS camera. On the computer is running software which analyses in real time the video coming from the VOGBOX. The developed application displays a graph after measuring the eye movements, which shows direction depending on time, time delay and the other parameters of eye movements according to the stimulation.