Understanding the connection between eye and brain, and conditions affecting optic nerve health. This page is part of the Vision & Eye Health hub on Evidence Before Claims. Content is for educational purposes only and is reviewed against peer-reviewed studies, FDA labeling, and current clinical guidelines. It does not provide diagnosis, treatment, or individualized medical advi
Reviewed by Michael Okafor, MD (illustrative reviewer) — MD, Ophthalmology. Last reviewed: May 2026. Educational content only; not medical advice.