How can I reduce eye strain when watching TV?

Dave from San Diego, CA

Episode 1396 (1:17:55)

Ambient TV bias light

Joe wants to know if backlighting or bias lighting will help combat eye strain while watching TV. Scott says that in a dark room, he'll get a better image, but with HDTVs being brighter, it can cause eye strain. That's why a bias or backlight helps. It shines a light behind the TV onto the wall and it smoothes out the light that your eyes see, so that your eyes aren't working as hard. It has to be a certain shade of white, though — D65. 10% of the peak brightness of the TV. The best place to get a bias light is

Image By Stephan Legachev (Own work) [CC BY 3.0], via Wikimedia Commons