After reading this, I felt like looking at mentions of open and closed eyes in Dream Theater songs. Here's the breakdown:
WDADU - "behind closed eyes" in Afterlife
IAW - "close your eyes" multiple times in Take the Time
Awake - "so open your eyes" in Scarred
FII - "open your eyes" in Just Let Me Breathe
SFAM - many references to both closed and open eyes
SDOIT - "Humility, opened my eyes" in The Glass Prison
TOT - Some mentions of eyes, but none specifying whether they are closed or open
8VM - "with both eyes open wide" in The Answer Lies Within, "eyes open" in Medicate section of Octavarium
SC - "close your eyes" in Forsaken
BC&SL - "close your eyes" in Wither
ADTOE - no mention of open or closed eyes, only borrowed eyes
DT12 - "open your eyes" and "if you open up your eyes" in Illumination Theory
After doing all this, I did not reach any conclusions, but I'm posting it anyway.