To adjust stereoscopic 3D settings for your display
From the NVIDIA Control Panel navigation tree pane, under Stereoscopic 3D, select Set up stereoscopic 3D to open the associated page.
If stereoscopic 3D is not enabled, check the Enable stereoscopic 3D check box.
Click and drag the Depth slider according to your stereoscopic 3D viewing comfort level.
Click Apply.
You can also use keyboard shortcuts or the wheel on the NVIDIA IR emitter to adjust depth while you are in a game.
The depth slider adjusts the perceived distance between the closest and farthest objects in the game.
The default hot keys are [Ctrl+F4] for increasing the depth and [Ctrl+F3] for decreasing the depth.