Ok, I dont get one thing.

For example, I know when I dont get a good nights sleep. I feel two things. I feel physically exhausted still and my eyes feel very tired (its hard to explain) And I'll have very prominent dark circles.

Now, today, I think I rested quiet well. (had pretty good sleep) My dark circles are barley noticeable. Physically I feel pretty powerful. Yet my eyes still feel kind of "strained", like I've been watching tv a lot or whatever. Like I cant concentrate that well with them.

Anybody know why?

Get an eye exam and find out.