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The Guardian - UK
The Guardian - UK
Politics
Nicola Davis Science correspondent

Treating eyesight issues could prevent one in five dementia cases, study finds

An older woman wearing glasses is filling out a puzzle book
The team said the percentage of dementia cases that could be attributed to a vision impairment was higher among people aged 71 to 79 years, women, and non-Hispanic white people. Photograph: Panther Media GmbH/Alamy

Up to one in five cases of dementia in older people might be avoided if problems with eyesight are prevented or treated, research has suggested.

According to the World Health Organization, there are about 55 million people living with dementia globally.

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