A groundbreaking study suggests a simple eye test could pick up on signs if someone is at risk of having a stroke. The research suggests that by analyzing the blood vessels in the retina, it’s possible to forecast an individual’s likelihood of having a stroke.

The retinal vascular network reflects characteristics similar to those found in the brain’s vasculature. Scientists can learn a lot about a person’s overall health by examining factors like the density, curliness, and branching angles of the veins and arteries in the eye.

In an extensive study involving over 45,000 participants from the UK Biobank, researchers analyzed eye images and followed the subjects for an average of 13 years, during which 749 suffered a stroke, reports Daily Express UK.