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 Special Goggles Analyse Eye Movements To Diagnose Disease

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Date posted: 28/04/2008

Sometimes the diagnosis of episodes of illness in schizophrenia, rotatory vertigo, or reading and writing deficits needs electro-oculography (EOG), performed using a special medical apparatus. Andreas Bulling, a doctoral student at the Wearable Computing Lab of ETH Zurich, has developed spectacles, similar to video eyewear, that should make this technique portable.

Andreas Bulling is developing a Wearable Eye Tracker in the context of his doctoral thesis. The special spectacles fitted with additional sensors record the wearer?s eye movements. This recording is based on the principle of electro-oculography (EOG), a technique that has been known for more than 30 years and in which eye movements are measured using electrodes ? similar to an electrocardiogram (ECG). Currently, the recording takes place in a doctor?s surgery or in a clinic, using static apparatus, and usually needs to be assessed manually by the doctor.

The Wearable Eye Tracker can record eye movements while the wearer is moving. This involves using electrodes built into a spectacle frame to measure changes in electrical potential caused by eye movements. However, in contrast to a static EOG, the spectacles can do this for a period of up to eight hours without being connected to mains electricity.

The data is also stored directly in the instrument.

A Zurich industrial design company is working in parallel on a further development of the spectacles. The ETH Zurich researcher filed a patent application for his invention at the European Patent Office last October, and is now looking for licensees in the medical or games industries.

See the full Story via external site: www.sciencedaily.com

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