This document discusses the paradigm shift from traditional glass rectangles like phones and tablets to virtual, augmented, and mixed reality. It outlines several major VR and AR hardware platforms and use cases in healthcare, including exposure therapy for PTSD, pain management, surgical training, and opportunities for disabled and homebound individuals. The global market for AR and VR in healthcare is forecast to reach $641 million in 2018. The document envisions a future where VR seamlessly intersects with technologies like artificial intelligence and biofeedback.