Eye-movement desensitisation has been identified in a number of case studies to be an effective treatment for post-traumatic stress disorder (PTSD). A further case study reporting success is presented. The treatment appears rapid and may represent a potentially cost-effective treatment for PTSD. However, no treatment study to date has conformed to the ideal methodology of a double-blind placebo controlled trial and therefore its efficacy remains to be demonstrated. A minimal but stringent set of criteria for identification of treatment efficacy are outlined. The implications of eye-movement desensitisation being identified as an effective treatment for PTSD are discussed.