Unable to see the big picture (6)
I believe the answer is:
myopic
'unable to see the big picture' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for myopic that I've seen before include "Unable to focus on distant objects" , "lack of foresight" , "Nearsighted" , "Imprudent" , "needing help from lens" .)