This document presents a case study of a 65-year-old female experiencing diminishing vision, pain, redness, and photophobia in her left eye for 15 days. Her history includes a corneal graft in the left eye 2 months prior and treatment for herpes simplex keratitis. On examination, the left eye shows signs of graft rejection including edema, microcysts, and vascularization. The provisional diagnosis is acute corneal graft rejection in the left eye. The recommended treatment includes IV and oral steroids, topical medications, and antivirals.