I'll be really upset if it turns out that watching TV in the dark doesn't damage your eyes. Now that I've suffered through years of watching movies with the lights on, it better be for a good reason. I mean, what about movie theaters? There aren't any lights in there and no one seems too worried. That's the problem with these conventional wisdoms; there aren't any quantifiers to let you know how much damage this stuff does. I bet we also find out soon that staring at the sun isn't bad for you. I'll really be living it up if that comes true.