Yes, for pistol shooting iron sights (just learned the english term, that’s what I meant by “focus on pistol” ;) ) are what you have to focus on. The target is black bulls eye, clearly visible on a white background, even if it’s blurry.Then you aim just below the bulls eye - so what you se is black iron sights (vision focus, sharp), then small white gap, then blurry black bulls eye. And then you learn to have all those elements spaced exactly the same on every single repetition.
You don’t have to track target, as it’s always in the same spot.