title: Collimators for post-operative radiotherapy of keratoplasty.
mesh_terms: D000535:Aluminum; D001345:Autoradiography; D003315:Cornea / Q000528:radiation effects / Q000601:surgery; D016039:Corneal Transplantation; D011835:Radiation Protection / Q000295:instrumentation*; D011878:Radiotherapy; D011879:Radiotherapy Dosage; D012834:Silver
chemical_list: D012834:Silver; D000535:Aluminum