Dementia: Cataract surgery shown to reduce dementia and Alzheimer’s risk


Dementia is one of the most common health conditions amongst older people in the UK. It is a devastating condition that affects thousands every year. A new study has found participants who underwent a cataract procedure went on to have a significantly lowered risk of developing the cognitive disease.

Researchers are finding strong evidence that cataract surgery is associated with a lower risk of developing dementia.

The Adult Changes in Thought (ACT) study involved more than 5,000 participants older than 65.

Out of the 3,038 people in the study, 853 went on to develop dementia, with the majority of these (709 people) developing Alzheimer’s disease.

Nearly half of the participants (1,382 people) had cataract surgery during the study period.

Researchers found that those who underwent cataract surgery had nearly 30 percent lower risk of developing dementia for at least 10 years after surgery compared to those who did not.

Lead researcher Dr Cecilia S Lee, associate professor and Klorfine Family Endowed Chair in ophthalmology at the University of Washington School of Medicine said: “This kind of evidence is as good as it gets in epidemiology.

“This is really exciting because no other medical intervention has shown such a strong association with lessening dementia risk in older individuals.”

Cataract surgery involves replacing the cloudy lens inside your eye with an artificial one.

It has a high success rate in improving your eyesight.

Further understanding the connection between the ageing eye and brain may offer insights and potential therapies to slow or prevent age-related dementia, researchers noted.



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