title: An analysis and interpretation of refractive errors after penetrating keratoplasty.
abstract: Despite advances in microsurgical techniques, astigmatism after penetrating keratoplasty is still a perplexing problem. In this paper, using retrospective studies, experiments, and observations, the factors that seem most significant in creating excessive postoperative astigmatism are delineated. The difficulty of creating a circular recipient hole of the same size and shape as the donor button appears to be a prime area for clinical research and technical development.
mesh_terms: D001251:Astigmatism / Q000209:etiology* / Q000517:prevention & control; D003315:Cornea / Q000601:surgery; D016039:Corneal Transplantation; D006801:Humans; D011183:Postoperative Complications; D012189:Retrospective Studies; D014184:Transplantation, Homologous