Your eyes could reveal your stroke risk! 

A groundbreaking study by an international research team has revealed that routine eye examinations can serve as a reliable tool to predict an individual’s risk of stroke. Led by the Centre for Eye Research Australia (CERA) in Melbourne, the study identified a specific blood vessel “fingerprint” in the retina that is as effective in assessing stroke risk as traditional methods, but without the need for invasive procedures.
The findings, reported by Xinhua News Agency, highlight that this “fingerprint” comprises 118 indicators of vascular health, which can be analyzed using fundus photography—a standard imaging technique employed in routine eye tests. The researchers developed a machine learning tool known as the Retina-based Microvascular Health Assessment System (RMHAS) to process fundus photographs and assess stroke risk.
The study analyzed the retinal images of 45,161 participants in the United Kingdom, with an average age of 55. Over an average follow-up period of 12.5 years, 749 of the participants experienced a stroke.
The researchers identified 29 of the 118 vascular indicators as being significantly linked to the risk of a first-time stroke. Among these, 17 indicators were related to vascular density, which measures the proportion of tissue in a specific region occupied by blood vessels. Reduced vascular density in the retina and brain was found to increase stroke risk.
For each change in vascular density indicators, the stroke risk was observed to rise by 10-19%. Similarly, a decrease in the twistedness and complexity of blood vessels elevated stroke risk by 10.5-19.5%.
The study underscores the practicality of using retinal imaging for early stroke risk assessment. “Given that age and sex are readily available, and retinal parameters can be obtained through routine fundus photography, this model presents a practical and easily implementable approach for incident stroke risk assessment, particularly for primary healthcare and low-resource settings,” the researchers explained.
Stroke, which affects over 100 million people globally and leads to approximately 6.7 million deaths annually, is a significant cause of disability and mortality. Early identification of individuals at high risk is critical for reducing stroke-related complications and fatalities.
This research paves the way for widespread use of routine eye tests as a non-invasive and cost-effective method for identifying individuals at risk of stroke, particularly in regions with limited healthcare resources.
The study represents a major step forward in leveraging technology and routine medical practices to address one of the world’s most pressing health concerns.