Cataract surgery reduces risk of dementia by close to 30%

A US study has explored the association between cataract extraction and the development of dementia

brain scans

Researchers have examined the relationship between cataract surgery and an individual’s risk of developing dementia.

The study, which was published in JAMA Internal Medicine, involved analysing data from more than 3000 people aged 65 or older who were free from dementia at the outset of a longitudinal study.

All 3038 participants received a diagnosis of cataract or glaucoma before enrolment in the study or during follow up appointments.

Cataract extraction was associated with a 29% reduction in the risk of developing dementia. Glaucoma surgery did not have a significant association with dementia risk.

The authors highlighted that further studies are warranted exploring the mechanisms that result in cataract extraction affecting dementia risk.

“These results have implications for the care of older persons who are uniquely at higher risk for both impaired vision due to cataract and impaired cognition due to neurodegeneration observed in age-related dementia,” the authors highlighted.