At stroke risk? The shape and size of your retinas can predict if you're vulnerable to get one

A recent study published in the international journal Heart has revealed that the shape and size of veins and arteries in the retina could serve as accurate predictors of stroke risk, potentially rivaling traditional methods without the need for invasive tests.

The retina, the light-sensitive layer at the back of the eye, has a vascular network similar to that of the brain. This similarity allows researchers to use retinal scans as a non-invasive tool to assess the health of blood vessels in the brain.

By analyzing factors such as the calibre, density, twisting, branching angles, and complexity of the retinal veins and arteries, doctors may be able to predict potential brain vessel damage.


The study analyzed data from 45,161 individuals aged 55 and older, sourced from the UK Biobank study. Over a 12.5-year period, 749 participants developed a stroke.

The research highlighted that those who experienced strokes were generally older, more likely to be male, smokers, and had higher rates of diabetes, weight, blood pressure, and lower levels of "good" cholesterol—all known stroke risk factors.

Upon examining retinal images, the researchers found that certain characteristics of the retinal blood vessels, such as increased arc length and chord length, were closely linked to a higher risk of stroke. Additionally, changes in vascular indicators like diameter and ratio were also found to correlate with stroke risk.

This innovative research opens up the possibility of using routine eye exams to assess stroke risk, providing a simple, effective way to detect early signs of vascular issues without the need for invasive procedures.

(With inputs from ToI)