Answer:
A device for finding furniture in the dark.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me finally. Only when he last closes his eyes.
You eat something you neither plant nor plow. It is the son of water, but if water touches it, it dies.
I cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
I have two eyes in the front and a lot of eyes on my tail