The retina offers unusually direct access to neural and microvascular tissue, but many systemic-health applications remain investigational rather than clinically established.
Why the retina is unusual
The retina is neural tissue with visible microvasculature, making it attractive for non-invasive measurement.
What researchers are studying
Researchers are investigating associations with cardiovascular, metabolic and neurological conditions.
What it does not prove
A predictive association does not mean an eye scan can diagnose a systemic disease in routine care.
What is next
Standardization, prospective validation, diverse datasets and clinically meaningful thresholds will determine which applications survive.
Evidence should be inspectable.
Production articles should link claims to primary literature, systematic reviews, clinical trials or authoritative institutions, with DOI/PMID fields stored in the CMS when applicable.
Read our editorial standard →