In order to "see" the man's POV, the researchers had the man look at people in front of him and compare them to a picture of the same person on a computer screen.

Researchers at the University of California’s San Francisco location were able to chart the man’s brain signals and translate them into sentences on a computer screen.

If you spend lots of time looking at a computer screen, you could be at risk for computer vision syndrome, or CVS. Learn more from WebMD about its effect on the eyes, including ways to prevent CVS.