A new study led by researchers at the University Institute of Ophthalmology in London (Great Britain) and published in the journal Acta Neuropathologica Communications suggest that the eyes, and in particular the retina, could reveal the early stage of Parkinson’s disease.
“A new, non-invasive eye test could detect the disease long before changes take place in the brain and the first symptoms as tremors or muscle stiffness do not develop “ the researchers said after a study in rats.
Screen for changes in certain cells of the retina
Patients with Parkinson’s disease are known to have blurred vision due to the loss of dopaminergic neurons in the retina of the eye. It is this dopamine shortage that also damages brain cells, causing tremors, muscle stiffness, and slowness of movement.
The screening method developed by the London researchers uses imaging instruments commonly used in eye clinics to screen for changes in certain ganglion cells in the retina as well as changes in its thickness. It has already been tested in humans for glaucoma.
“These tests mean that we may be able to intervene earlier and more effectively in people with this devastating disease.” said Prof. Francesca Cordeiro, lead author of the study.
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