EMDR Therapy is relatively new. I had previously posted about EMDR Therapy as possibly being an option for the treatment of PTSD and Comlex PTSD. I had posted a video by Francine Shapiro, the originator of EMDR Therapy where she explained the EMDR Treatment Protocol.
To provide for a balanced view, there is very good article reviewing EMDR posted on the Quakwatch website. It was well researched and includes lots of references.
I did state in my initial post that no one knows why EMDR works (or where in the Human Brain). In the 20/20 News Video about EMDR, one patient spoke very highly of the results. With all things of Science, the ability to replicate the results, confirms the results – or not.