If you suffer from tunnel vision, you are unable to see things that are not straight in front of you.
2. uncountable noun
If you say that someone has tunnel vision, you disapprove of them because they are concentrating completely on achieving a particular aim, and do not notice or consider all the different aspects of what they are doing.
[disapproval]
tunnel vision in British English
noun
1.
a condition in which peripheral vision is greatly restricted
2.
narrowness of viewpoint resulting from concentration on a single idea, opinion, etc, to the exclusion of others
tunnel vision in American English
a narrow outlook; specif., the focus of attention on a particular problem without proper regard for possible consequences or alternative approaches
Examples of 'tunnel vision' in a sentence
tunnel vision
His tunnel vision cleared, heart rate slowing, mind starting to come back into focus.
Terman, Douglas CORMORANT (1994)
He imagined a tunnel vision that would inexorably exclude his own claims for notice.