While it’s often said that the eyes are the windows to the soul, we’ve known for years that they provide much more than a mere glimpse into our emotional state. The eyes are, in fact, crucial gateways to discovering diseases lurking dormant within our body. For scientists at the vanguard of this work, like Dr Siegfried Wagner, that window is only going to get bigger. We spoke to him about the trajectory of his career and his enthusiasm for ‘oculomics’, the study of the association between changes in the eye and changes to overall health.