You accidently did not hve any morphs loaded that moved the eyse forward when you exported from Poser?

Check the eyes origins in the joint editor between the morphed and unmorphed heads.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!