laser focus
Intensely paying attention to a single object, concept, person, or activity to the exclusion of everything else.
She had such laser focus on a guy named Chad that she failed to realize that her best friend was in dire trouble.
Laser-like Focus
An Australian Colloquial term for willful ignorance
Minister Tudge at the Robodebt Royal Commission "I had a laser-like focus on my responsibility as the minister" I didn't know the scheme was unlawful.