Jens, are there many non sacrificial swords with the eye inscription?
I think there are more deep and complex meanings on the imagery used over the war weapons. You can find a very interesting discussion related to the subject of the eye inscription over the blades of the swords in this thread:
http://forums.swordforum.com/showthread.php?t=79432
Also, there are references to bibliographical analysis in relation to this subject.
Regards
Gonzalo