title: The triple procedure. Refractive results. 1985 update.
abstract: A total of 77 triple procedures performed over a 6-year period were studied retrospectively and prospectively with the goal of producing refractive errors within 2 diopters (D) of emmetropia. Thirty-eight of 58 eyes achieved refractive errors within 2 D of emmetropia over the entire study; however, cases performed in the last 30 months achieved a mean refractive error close to emmetropia. Assuming that accurate axial length measurements were performed, the postoperative keratometry readings and, to a lesser degree, the "A" constant used in the regression formula had the greatest impact on the ultimate refractive error. Only a few cases had unacceptable refractive results possible due to inaccurate axial length measurement and/or incorrectly labeled intraocular lenses. The postoperative keratometry readings closely approximated the estimated preoperative readings that were used in the lens implant power calculation regression formula. With currently available techniques, the triple procedure appears to provide a useful modality for the correction of cases with a combined corneal opacity and a cataract.
mesh_terms: D001251:Astigmatism / Q000209:etiology / Q000503:physiopathology; D002387:Cataract Extraction; D003315:Cornea / Q000473:pathology; D016039:Corneal Transplantation; D006801:Humans; D007910:Lenses, Intraocular; D011183:Postoperative Complications; D011184:Postoperative Period; D011446:Prospective Studies; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000209:etiology / Q000503:physiopathology