Eye exams can further reveal a range of neurological disorders. Multiple sclerosis, for example, often begins with an inflammation of the optic nerve.

The latest research even suggests that sophisticated imaging technology, like retinal scans, could spot early signs of Alzheimer’s — specifically the protein beta-amyloid, which causes the characteristic plaques in the brain.

Listen as Emory Healthy Aging Study’s Allan Levey, MD, and other medical professionals explain how an eye exam can save your life:

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