While the eye is always a sight to behold, it’s not just the sense that translates light waves into images. It’s also a kind of metronome for our well-being. Scientists compare our eye to a window with a view of the brain: when it opens, a quarter of our mental capacity is mobilized… On a journey from past to future, guided by specialists who explore, treat or invent every day, let’s discover sight as you’ve never seen it before!