In Harry Potter bones can be grown from nothing in the span of hours, people can have their face and even species changed, and few if any imaginable maladies are beyond care if not cure. Why then has no one invented fucking magical Lasik?
Because the spells are general, and the eyes require delicate specificity to fix.
remember when hermione accidentally used cat hair in a pollyjuice potion and it explicitly was an awful, miserable experience that took ages to fix?
yeah no species can’t be easily changed.
Transfiguration would say otherwise. That was a mishandling of a potion far above what they were supposed to be working with, and even then it was reversed in time.