Hasn't anyone thought the obvious????They sense you!duh
the obvious would be that they have eyes... in WW they have eyes. in OoT they have black holes where eyes would be which i think we can assume are eyes. just because they are all black doesnt mean they are blind. why would they have "normal" looking eyes. they are monsters. doesnt say anywhere in the series that they sense you and in fact it says that when they GAZE at you, you are temporarily stunned. you cant gaze without eyes. if you could then you wouldnt even know if youre looking at someone or not.