The Hoffman “Easy Vision” television.

H. Leslie Hoffman (1906 – June 24, 1971) was an American businessman. He was the founder and CEO of Hoffman
Radio from 1941 to 1971, which changed its name to
Hoffman Radio and Television in 1948.

During the early years of television there was considerable
concerns that long term viewing television could damage
one’s eyesight due to eye strain. Hoffman took advantage
of this scare by advertising that the yellow-green tinted s
creen reduced eye strain. He marketed his televisions as
"Easy Vision." 
(From Wikipedia, the free encyclopedia)