Artificial intelligence glasses help blind people read and recognise loved ones

When Sarah Matthews was left completely blind three years ago after suffering a head injury in an accident, she feared she would never lead a normal life again. The mum of one was struggling to do basic tasks, such as getting things out of a cupboard. But even more agonising was the fact that she could no longer recognise her family and friends. The injury damaged the optic nerve in both eyes, leaving her unable to know when her five-year-old son Evan was coming over for a hug. But thanks to advances in science, artificial intelligence has transformed her life.