American English

Definition of tunnel vision noun from the Oxford Advanced American Dictionary

     

    tunnel vision

     noun
    noun
     
    [uncountable]
     
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  1. 1(medical) a condition in which someone cannot see things that are not straight ahead of them
  2. 2(disapproving) an inability to see or understand all the aspects of a situation, an argument, etc. instead of just one part of it
See the Oxford Advanced Learner's Dictionary entry: tunnel vision