According to a study recently published by Joslin Diabetes Center, the eyes may be an early indicator of cognitive decline. Dr. Ileana Berman, Cognitive Science Researcher, discusses the subject:

It is widely believed that individuals with diabetes are more likely to develop cognitive disorders than those without.  Specifically, they are often prone to the development of dementia and Alzheimer’s.  Now, a study out of Joslin Diabetes Center indicates that routine eye scans may be able to provide early clues of cognitive decline.  In Dr. Ileana Berman’s professional perspective, this is further support to the idea that health is often holistic.  When treating cognitive conditions, it is always important to consider the many other factors at play in an individual’s overall health.