Link between eye conditions and dementia

Eye conditions like age-related macular degeneration, cataract and diabetes-related eye disease are linked to an increased risk of dementia, suggests research published in the British Journal of Ophthalmology.

Dr Sara Imarisio, Head of Research at Alzheimer’s Research UK, said:

“Health problems like diabetes and high blood pressure are linked to an increased risk of dementia and an increased risk of eye conditions. This study suggests that the association between eye conditions and dementia is not entirely explained by shared underlying risk factors, and that there could be a more direct relationship.

“While association studies like this can highlight relationships between different medical conditions, we need to see experimental research to really understand the causes of these links and what they might mean for risk reduction and future health care.

“Although some researchers have suggested that a lack of sensory stimulation could accelerate the progression of dementia and that this could be the case for visual impairment, we don’t currently have good evidence to support this.

“Current evidence suggests that the best way to support brain health is by staying physically and mentally active, eating a healthy balanced diet, not smoking, drinking only within the recommended limits and keeping weight, cholesterol and blood pressure in check.”