This article presents a new development on the field of psychotherapy: Eye-Movement Desensitization and Reprocessing (EMDR). This recently developed procedure promises rapid and effective treatment of anxiety related complaints, including post-traumatic stress disorders (DSM-III-R). In essence the therapist induces a series of rapid and rhythmic eye-movements. EMDR facilitates cognitive changes and lasting decrease of anxiety. As indicated by research and illustrated by case histories, EMDR can be effective in one session. Until now there is no definitive explanation for the effectiveness of this method.