Use this command to set the interpupilary distance that will be used in generating the left and right eye images for the window. This is only used when stereoscopic images are being rendered. Interpupilary distance is the distance between the observer's eyes. An average eye separation is 0.06 meters. Values greater or less than the observers's actually eye separation will result in a decreased or increased sense of stereoscopic depth information, respectively.

Note: You can implement reversed stereo by sending a negative interpupilary distance.