EMDR stands for EyeMovement Desensitization and Reprocessing. I am not very good at explaining it all but the official website would probably answer most of your questions. EMDR.com. I hope it is okay to post websites, if not , I am sorry, I didn't know.
It works very well for people who have gone through tramatice experiences like child abuse, rape , war stuff, . I was very skepitical of it, but now I believe it can really help a lot of people.