Smith is batting .241 with six home runs and 33 RBIs in 95 games this season.
"He's 20-20," Melvin said about Smith's vision. "He had an issue and then had to have the lasik [surgery]. I'm glad that's a quick process. A couple of days and he's seeing better than he was before. That's a good thing."
Todd Karpovich is a contributor to MLB.com.
This story was not subject to the approval of Major League Baseball or its clubs.