Fig. 4

Slit-lamp microscopy images of eyes with graft failure. a–c A patient was diagnosed with fungal keratitis who experienced recurrent infection within 1 week after the operation. A repeated PKP was performed. d–f A patient with mild eyelid deformity and lagophthalmos, which resulted in neovessel ingrowth and led to late graft dissolution. g–i A patient with a diagnosis of herpes simplex keratitis who had persistent epithelial defects after the operation that ultimately progressed to corneal ulceration. j–l The graft was transparent in the initial postoperative period, but neovessels later grew into the center of the graft