Scientists have found out that staring into somebodies eyes can alter ones perception and can even lead to serious hallucinations.

According to an article published in a Psychology journal, out of 20 candidates who were tasked to stare into each others eyes for 10 minutes, more than half of the candiates saw monsters, distorted faces, themselfs or other illusions after only few minutes into the experiment.

picture: tyzen.com

Sources:

http://www.psy-journal.com/article/S0165-1781(15)00321-2/abstract

http://www.theguardian.com/science/shortcuts/2015/aug/24/look-eyes-staring-hallucinate-10-minutes