Wrist activity rhythm and sleep diary of delayed sleep phase syndrome

PURPOSE: To describe the complication of retained intraocular recipient corneal button after penetrating keratoplasty. METHOD: Case report. A 27-year-old man was referred to us because of complications after penetrating keratoplasty on the right eye. Slit-lamp examination disclosed a clear graft with a second clear corneal button behind. RESULTS: A second penetrating keratoplasty was performed successfully on the right eye. Histologic examination showed an intact epithelium and stroma vascularization of the recipient corneal button. Immunochemistry of the recipient corneal button and the first donor corneal button was performed. CONCLUSION: Although the recipient corneal button remained inside the anterior chamber for 5 months, no epithelial ingrowth occurred.