Abstract: A human eye dilation simulator is provided for use in a medical patient simulation mannequin. The eye simulator's pupils dilate and constrict in response to light stimuli, and physiological condition. Eyelids open, close, and blink under control of a simulation computer. The eyelids and can be opened manually for student examination, testing, and diagnosis. Each eye can be programmed independently with a variety of responses to simulate actual eye responses to various neurological dysfunction, trauma, or drugs. The eye simulator is used in conjunction with other responses from a patient simulator mannequin to simulate the bodily responses of an actual patient to various situations encountered in the medical field. The patient simulator is used for training medical personnel especially in the areas of trauma care and anesthesiology.