"Adherents of emission theory cited at least two lines of evidence for it.
The light from the eyes of some animals (such as cats, which modern science has determined have highly reflective eyes) could also be seen in "darkness". Adherents of intromission theory countered by saying that if emission theory were true, then someone with weak eyes should have their vision improved when someone with good eyes looks at the same objects."
this would be a SICK mechanic in a multiplayer game. either some arkham horror shit or a ff14 alliance raid