[ktizo]

I did ergonomics as part of my course at uni. Having the top of the screen at eye level means your gaze is always from level and down, this is not good practice and encourages a hunched posture as you will tend to aim your head at the middle of the screen and use upward eye movement to look at the top of the screen. Having the center of the screen at eye level keeps your neck straight and there is plenty of movement in they eye itself to look to the top of the screen without having to tilt your head back, even when fairly close to a screen. The major exception to this is when wearing bifocals.

[ktizo]

However I am re-reviewing the literature and might be able to be convinced that having it slightly lower is better, but I still think that having the top of the screen at eye level is too low. Has been ages since I looked at this properly, so I might be suffering from reality-distortion.