Study: Changes to retina may help diagnose Alzheimer's earlier

A group of researchers thinks eye health may be able to help diagnose Alzheimer's disease. Since the disease begins in the brain decades before any symptoms appear, many patients don't know they have Alzheimer's until it has progressed.

The new study published by Acta Neuropathologica looked at retina and brain samples from 88 people over 14 years concluding that changes in the retina correlate to changes to the brain associated with Alzheimer's.