Tunnel vision, as a metaphor, may also denote the reluctance to consider alternatives to one's preferred line of thought; this could include physicians treating afflictions, detectives considering crime suspects, or anyone predisposed to a favoured outcome. I fear some (just very few) of us have a tunnel vision on the way things go right now with cuu.

I do have tunnel vision too but my tunnel is currently filled with fear. The only thing is is that my greed is stronger than my fear.... GLTA