Imhof underwent surgery after suffering an eye injury during routine stretching exercises, Jerry Crasnick of ESPN.com reports.
Imhof's injury occurred during a freak accident when a piece of equipment broke and hit his right eye. He's expected to need further treatment, as the injury seems to be quite serious and could be career-threatening. Imhof had a 3.91 ERA and 1.60 WHIP at High-A Clearwater this season.