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Possible association found between AMD, VA and cognitive impairment

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A potential association between cognitive impairment and age-related macular degeneration and visual acuity may exist, according to a population-based study.

The Age-Related Eye Disease Study (AREDS) group administered a cognitive function battery test to 2,946 participants. The battery consisted of six neuropsychological test measuring performance. The researchers then qualified results based on AMD and visual acuity severity.

Mean scores declined with increased macular abnormalities and reduced VA, the researchers noted. Reduced vision was found to be associated with reduced mean cognitive function scores. People with vision worse than 20/40 were more likely to be cognitively impaired.

The study is published in the April issue of Archives of Ophthalmology.