You're being intentionally obtuse. Lasik (or glasses/contacts) can significantly correct for a congenital vision disorder. We don't pretend as if the person's vision is still the same.
I was born with a genetic heart condition that I had surgery for when I was 18 and have been cured ever since. But if you still were to sequence my DNA, you'd see the associated gene despite the condition having been surgically treated.
My point is that we have no problem accepting technological or medical advancements related to just about anything, except some are suddenly Amish when it comes to trans people.