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Is the retinal age gap a predictive biomarker for mortality risk?

According to a study in the *British Journal of Ophthalmology*, a larger 'retinal age gap' is linked to an increased risk of death, especially from non-cardiovascular and non-cancer causes. This finding suggests a potentially powerful, non-invasive screening tool to answer the question: **Is the retinal age gap a predictive biomarker for mortality risk?**