Definitions for tunnel vision
Random House Webster's College Dictionary
a drastically narrowed field of vision, as in looking through a tube, symptomatic of retinitis pigmentosa.
Category: Common Vocabulary
Origin of tunnel vision:
visual impairment involving a loss of peripheral vision
A restricted field of vision as the result of looking through some type of object or a medical condition.
To focus one's attention on one specific item or event, to the exclusion of everything else.; a one-track mind
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