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Eye test may detect early signs of Parkinson's disease

Researchers in London may have found a method of detecting changes in the eye, which could identify Parkinson's disease before its signs develop.

These tests could lead to a cheap and non-invasive way to spot the disease.

Parkinson's affects 1 in 500 people and is the second most common neurodegenerative disease across the world. A study on rats found that changes could be seen at the back of their eyes before visible signs occurred.

Signs of Parkinson's include tremors and muscle stiffness, slowness of movement and a reduced quality of life. There is currently no brain scan, or blood test, that can clearly diagnose Parkinson's disease.

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