Electroretinogram eye test

Electroretinogram eye test

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This image is part of the feature Multifocal Electroretinogram

Credit: COLIN CUTHBERT/SCIENCE PHOTO LIBRARY

Caption: Electroretinogram. Hands attaching a gold-foil electrode to a woman's lower eyelid for a multifocal electroretinogram (MFERG) eye test. MFERG allows eye diseases to be detected at an early stage. The woman will look at the pattern of flickering hexagons behind her. Light-sensitive cells in the retina at the back of her eyes conv- ert the light from the hexagons into electrical signals. These are picked up by the electrodes on her eyelids and face, and converted into a map of visual response. The health of the different areas of the eye can be assessed, as each hexagon is seen by a separate bit of the retina. This test is being developed at Glasgow University, Scotland.

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Keywords: britain, british, check-up, diagnosis, diagnostic, diagnostics, examination, examining, eye testing, eyelid, face, female, glasgow university, gold-foil electrodes, healthcare, hexagons, medical, medicine, mferg, multifocal electroretinogram, ophthalmic, ophthalmology, optical, patient, research, retinal, scotland, scottish, screen, skin, uk, united kingdom, vision, visual, woman

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