This is exactly my situation without wearing corrective lenses.
I've been near-sighted since first grade and have worn corrective lenses all my life (I turn 66 next month). Over the last ten years my vision has improved considerably and though I still need glasses for perfect distance vision, I can definitely function (like driving) without them.
Without glasses the sights are well-focused and the target clear enough to hit it where I aim, so "target focus" for me is looking/focusing solely on the target and then bringing the sights into my line of vision. At that point since the sights are better focused than the target, I find myself taking a split-second to overlay the sight picture on the target, at which point I can see both the sights and the target equally well. When I began shooting over 40 years ago, this was not possible - either the sights or the target was in focus, not both at the same time.
This is something I'm looking to leverage with my shooting skills. I believe taking the extra split second to perfectly align the sights without having to shift my focus from the target is better than not visually referencing the sights at all.