The first successful penetrating keratoplasty was performed in 1905 by Eduard Zirm. 1 The donor for this transplant was an 11-year-old boy and the recipient a 45-year-old adult. Zirm's successful surgery was the basis for elaborating the basic principles of successful penetrating keratoplasty and ushered in an era of innovation and improvement in surgical outcomes. However, corneal transplantation with a child as the recipient has proved considerably more challenging. Before the 1970s, pediatric penetrating keratoplasty (PPK) was recommended only for older children or in children with severe bilateral disease. 2 PPK presents a unique set of surgical challenges. The young child's eye is smaller and the sclera and cornea are less rigid, making tissue sizing and apposition more difficult. Moreover, positive posterior vitreous pressure encountered in PPKs can cause significant anterior displacement of the lens-iris diaphragm during ''open sky'' surgery. The brisk inflammatory response of pediatric eyes to surgery can increase the risk of scarring, rejection, cataract, and glaucoma. In addition, many pediatric eyes coming to transplant harbor congenital anomalies that further confound the surgery.Postoperative management of the PPK also differs in that frequent examinations are necessary, commonly under general anesthesia. Parents must be prepared carefully to assume their responsibilities in a demanding postoperative regimen. Sutures are adjusted and removed much earlier than in the adult patient, requiring anesthesia in the young child. Treatment of amblyopia and close attention to refractive correction is also critical to the visual outcome.These special considerations necessitate a team approach that is distinctly different from keratoplasty in the adult. Collaboration between