What is the VASI?
The Visual Assessment of Sexual Interest (VASI) is an objective physiological evaluation designed to capture and measure visual behavior associated with sexualized interest. The VASI uses eye-gaze technology to record visual behavior as an individual views neutral and test stimuli. Test stimuli contain images of individuals from both sexes and each level of sexual maturity, as defined by the Tanner Stages of Sexual Maturation. The recorded visual behavior is algorithmically combined into Units of Visual Fixation specific to each sex and each Tanner Stage. The results of the assessment are used to assess risk and optimize treatment plans.