sharp-sighted

The most sharp-sighted eye could not have discovered his place of concealment.

Sally was a shrewd, sharp-sighted girl, and already had her preference in favor of Michael Welsh, father's hired man.

He is extremely sharp-sighted, and has eyes in the back of his head, I believe.

But if you are not sharp-sighted, and one balance is not enough for you, bring another.

Such plans, you know, might be sadly upset by a hungry and sharp-sighted bird.