Does the sense of sight usually affect your reaction towards something?

This is a weird question. But I was just wondering if the fact that you actually see something changes the way you react to it. I cant exactly explain it in much depth.
For example, if you were in the dark, or let’s say you were too tired and you have your eyes closed, _ as long as its dark _ and feel something like an insect or whatever creeping on you, would you just push it off or squish it with your hand and think; it doesn’t matter I can’t see it anyway. In other words, does it decrease your fear of the thing itself?
Or think of any other example as long as you understand what I mean. It can be anything. Interpret it like you want, but give a useful answer. :)