Medical professionals are embracing the technology to help patients deal with PTSD, anxiety disorders and more.

A June 21, 1995, headline on page 11 of the New York Times read: “‘Virtual Reality’ Conquers Fear of Heights.” The article told the story of Chris Klock, a junior at Georgia Tech, who donned a head-mounted display once a week for seven weeks and was transported to a 3-D environment simulating various altitudes.