1)
What is the significance of lifting their eyes?
1.
Rashi: This is haughtiness.
2.
Malbim (Derech ha'Muskal): They lift the eyes of their investigation to research matters elevated above them, in matters of Elokus and what is past nature, as if their intellect can grasp everything.
2)
What is the significance of lifting their eyelids?
1.
Malbim (Derech ha'Muskal): The eyelids close the eyes. They lift them, and do not do not cover their eyes to prevent looking at Elokim. They send their eyes in a place of thick darkness.
