Subject: Why is it recommended not to watch television in the dark?

My friend and I are betting against her friend that it is more beneficial to 
watch t.v. with the lights on rather than in the dark. My theory is that your 
eyes have to adjust more to the range of light that a tv emits in the dark, 
which, personally, can give me a big headache, as opposed to when the lights 
are on and the light levels remain relatively constant. This friend that we're 
betting against supports his side by stating that we watch movies in the dark 
at a movie theater, so why not tv? I say that there is enough light emitted 
from the movie at a movie theater because of the size of the screen and the 
light is more consistent since the movie isn't constantly blacking out due to 
commercials, change of channels, program, etc.

Re: Why is it recommended not to watch television in the dark?