A method for using an electronic device having a display to prepare a patient for a medical treatment. The method includes the steps of representing a world on the display (300), wherein one or more medical objects related to the medical treatment are placed in the world； receiving an input from the patient to select the medical objects (326)； selecting the medical objects； and providing feedback to the patient to indicate that the medical objects have been selected (327). The method reduces pain and anxiety when undergoing the medical treatment by familiarizing the patient with the medical objects, and by distracting the patient's attention from the treatment.
