An artificial intelligence expert who struggled with symptoms of traumatic brain injury for eight years following a car crash was able to be “put back together again” in steps, with remarkable progress in the first month, thanks to the efforts of two professional women — a neuroscientist and an optometrist using advanced neuro-optometric rehabilitation.

So, says Clark Elliott PhD, a professor at Chicago’s DePaul University, who details his long journey back to health in a 2015 book that has now been read or discussed by millions of people throughout the world – The Ghost in My Brain.