Sign up for Englemed updates from TwitterSign up for Englemed updates from Facebook
Contact Englemed
Our contact email address.
We can provide a specialist, tailored health and medical news service for your site.
Click here for more information
RSS graphic XML Graphic Add to Google
About Englemed news services - services and policies.
Englemed News Blog - Ten years and counting.
Diary of a reluctant allergy sufferer - How the British National Health Service deals with allergy.
BookshopFor books on women's health, healthy eating ideas, mental health issues, diabetes, etc click here

WWW Englemed
Copyright Notice. All reports, text and layout copyright Englemed Ltd, 52 Perry Avenue, Birmingham UK B42 2NE. Co Registered in England No 7053778 Some photos copyright Englemed Ltd, others may be used with permission of copyright owners.
Disclaimer: Englemed is a news service and does not provide health advice. Advice should be taken from a medical professional or appropriate health professional about any course of treatment or therapy.
COVID vaccination gives huge boost to post-infection immunity
Fri February 26th - Vaccination is acting as a booster dose for people already enjoying some protection against COVID-19 after exposure to the disease, British scientists reported last night. More
Increased opioid agonist treatment could reduce drug deaths
Fri February 26th - Scaling up the use of opioid agonists could help to reduce drug-related deaths substantially, new international research claims. More
On 09/10/2020 William Haworth wrote:
How long is recovery time after proceedure... on Ablation cuts atrial fibrillat...
On 08/02/2018 David Kelly wrote:
Would you like to write a piece about this to be i... on Researchers unveil new pain re...
On 23/10/2017 Cristina Pereira wrote: on HIV breakthrough - MRC...
On 12/09/2017 Aparna srikantam wrote:
Brilliant finding! indeed a break through in under... on Leprosy research breakthrough...
On 01/07/2017 Annetta wrote:
I have been diagnosed with COPD for over 12 years.... on Seaweed plan for antimicrobial...

Vision tests to map Parkinson's cognitive decline

Wednesday January 20th 2021

New research is suggesting that a simple test of vision can predict the risk of cognitive impairment and possible dementia among people with Parkinson’s disease.

A further study is helping to explain the link between vision problems and connections between other brain areas.

Dr Angeliki Zarkali of University College London, UK, led both studies. She explains: “We have found that people with Parkinson’s disease who have visual problems are more likely to get dementia, and that appears to be explained by underlying changes to their brain wiring.

“Vision tests might provide us with a window of opportunity to predict Parkinson’s dementia before it begins, which may help us find ways to stop the cognitive decline before it’s too late.”

The first study involved 77 people with Parkinson’s disease who were given vision tests and followed for 18 months. Results of these tests predicted which patients would later develop dementia.

Findings were published in Movement Disorders recently.

The second study, yesterday (19 January) in Communications Biology, involved 88 Parkinson’s disease patients - 33 of whom had visual dysfunction - and 30 healthy adults.

All participants had MRI scans of the brain. These showed that structural connections between brain regions are decoupled among people with Parkinson’s disease, and this decoupling is particularly evident among those with vision problems, who had more decoupling in memory-related regions in the temporal lobe.

Dr Angeliki said: “The two papers together help us to understand what’s going on in the brains of people with Parkinson’s who experience cognitive decline, as it appears to be driven by a breakdown in the wiring that connects different brain regions.”

Zarkali, A. et al. Visual Dysfunction Predicts Cognitive Impairment and White Matter Degeneration in Parkinson’s Disease. Movement Disorders 9 January 2021 doi: 10.1002/mds.28477


Zarkali, A. et al. Organisational and neuromodulatory underpinnings of structural-functional connectivity decoupling in patients with Parkinson’s disease. Communications Biology 19 January 2021 doi: 10.1038/s42003-020-01622-9


Tags: Brain & Neurology | Eye Health | UK News

Printer friendly page Printer friendly page

Comment on this article:

<a>,<b> & <p> tags allowed
Please enter the letters displayed:
(not case sensitive)