Lixma,
We don't use 2 eyes in this sim. We are playing in a 2d world here. We have one POV to look upon and until technology has changed, this is what the limits of COD will be.
So you are basically a cyclops in the game, but my point in all of this is the point of reference you are looking at "in-game" would be one eye, directly in the center of the pit.
This video (remember a camera only has one eye) shows exactly what I'm talking about with regards to the current limitations present with simulating something via a 2d image.
Notice how the sight goes out of view depending on where your one eye is looking. That's how it's modelled in the game. Because in the game we can only have one eye. The last thing I would want to see on my screen is a recticle covering 1/2 the revi and 1/2 into space. When technology is out to simulate true 3d in the game, I'd wager that the sight would show up just as it was in RL. But it's not going to until that time.