The surgery works. And now his challenge is just beginning. He can't relate to anything he sees since he's never seen it before. He's only touched objects and comparing his mental image with the new visual one is often disappointing and certainly confusing. Arranging everything into a coherent picture is terribly difficult.
Depth perception is hard to learn.
He walks into glass doors. He trips over steps. He reaches out to grab a hold of a vase and knocks it over instead. He has to literally relearn everything. His passion for Amy and the opportunity to live in her world with her keep him boldly trying.