A ground-breaking device to help patients with dizziness problems has moved a step forward following a successful research study. The Continuous Ambulatory Vestibular Assessment (CAVA) device aims to speed up the diagnosis of the most common causes of dizziness. The study shows the results of the biggest collection of continuous eye movement data after testing the effectiveness of the wearable diagnostic headset. And finds the technology to be 99 per cent accurate at detecting eye flicker (nystagmus).