When in game, and hitting escape to go to menus.
Visual Stereographic effect exaggerated on left/right of screen space can head to headaches/nausea.
Images depicts exaggerated effect very prevalent on right side of image
Images
http://impulse9.unitedoperations.net/misc/a3/a3_169_stereographic_effect_ex1.png
http://impulse9.unitedoperations.net/misc/a3/a3_169_stereographic_effect_ex2.png
Video depicts exaggerated effect very prevalent on right side of image
http://youtu.be/LQj1T4Mzayg
Close proximity to objects gives enhanced effects, when witnessed behind menu areas menus become hard to read for some users.