The eyes are the body’s unique camera, livestreaming every waking hour to the brain. How in the world do these moist organs, decorated with irises of varying colours, manage this incredible task—that is, seeing? Sight is a bit like love: you don’t know you love it until it’s gone. In reading this book, you will come to realise that the function of the eye plays a key role in our lives. Many people live good lives without sight, but what can be prevented should be prevented.

In this book, medical student and researcher Sara T. Nøland describes how vision works in a simple, entertaining and fascinating way, injecting fun facts, the latest and most cutting-edge research, and specific tips and tricks.