Retinal imaging may reveal risks for atrial fibrillation

A study published in PLOS Digital Health suggests that routine eye examinations could potentially identify risks for cardiac issues, specifically atrial fibrillation. By analyzing retinal images from over 90,000 individuals in the United Kingdom, researchers found that changes in the inner layers of the retina are linked to a higher probability of this arrhythmia, which is associated with stroke risk.

Using data from the AlzEye study and the UK Biobank, researchers observed that thinning in the ganglion cell layer (mGCIPL) was a significant indicator. Specifically, every standard deviation reduction in mGCIPL thickness was associated with a 27% increase in the risk of atrial fibrillation. While the findings show a correlation between retinal changes and arrhythmia, researchers emphasize that this does not prove causality and is not intended to replace traditional cardiac studies.

Experts from University College London and Moorfields Eye Hospital noted that while retinal imaging could help identify high-risk individuals, further research is required to confirm these results.