Virtual reality (VR) is an artificially created environment that users accept as real. VR can help autistic children by providing a safe environment to practice social skills. The document discusses several applications of VR including entertainment, sports, healthcare, military, education and training, scientific visualization, and construction. It also outlines benefits like visualization and adaptability, as well as drawbacks such as cost and equipment fragility. The conclusion states that VR allows flexible learning and regulating environments to better match individuals with autism or attention disorders.