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Early Parkinson’s diagnosis possible with simple, non-invasive eye scan
Researchers have developed a simple, non-invasive method of diagnosing Parkinson’s disease early using an eye scan. It could mean treatment aimed at slowing the disease can start sooner or, alternatively, could be used to monitor the disease’s progression.
“By [the time symptoms appear], the disease has been present for several years and the affected neurons are already engaged in an irreversible degenerative process,” said the study’s corresponding author, Martin Lévesque, PhD, professor at Laval’s Faculty of Medicine and CERVO researcher. Electroretinography (ERG) is a technique used to evaluate the electrical activity of the retina, the light-sensitive tissue at the back of the eye, in response to light stimulation. “We placed an electrode on each participant’s lower eyelid and recorded their retinal response to a series of flashes of different intensity, frequency and color,” Lévesque said.
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