Regularity of corneal topography after penetrating keratoplasty--comparison between non-mechanical (excimer laser 193 nm) and mechanical trepanation

Klinische Monatsblätter für Augenheilkunde
A LangenbucherG O Naumann

Abstract

"Vertical tilt" of the graft caused by incongruent cut angles, "horizontal torsion" caused by a asymmetric suturing and decentration of the wound seem to be the most important reasons for high and/or irregular postoperative astigmatism and deterioration of visual outcome after penetrating keratoplasty. We studied the time course of qualitative and quantitative topographic criteria after nonmechanical and mechanical trephination in correlation with visual outcome. Fifty patients each (30 keratconus, 20 Fuchs' dystrophies) underwent nonmechanical trephination (excimer laser MEL60, Aesculap-Meditec, Heroldsberg) and mechanical motor-trephination in penetrating keratoplasty. All procedures (7.5 mm trephination diameter in Fuchs, 8.0 mm in keratoconus, double-running 10-0 nylon suture) were done by one surgeon. Pre-, intra- and postoperative treatment were identical. At the follow-up examinations, the keratometric astigmatism, qualitative and quantitative criteria of the automatic videokeratography, visual acuity and refraction were assessed. In addition, vector-corrected astigmatism (Jaffe-model) was evaluated in the postoperative time course, particularly after suture removal. After a mean follow-up of 1.1 +/- 0.8 years, keratomet...Continue Reading

Citations

Nov 21, 2000·Journal of Cataract and Refractive Surgery·A BehrensG O Naumann
Sep 13, 2011·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·B SeitzG O H Naumann
Aug 18, 2004·Journal of Cataract and Refractive Surgery·Elias F Jarade, Khalid F Tabbara
Sep 7, 2006·Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde·Berthold SeitzGottfried O H Naumann
Dec 6, 2005·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·B SeitzG O H Naumann
Jan 23, 2020·Current Eye Research·Karl Thomas BodenAnnekatrin Rickmann
Jan 15, 2003·Current Eye Research·Achim LangenbucherGottfried O H Naumann
Nov 7, 2012·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·K NiniosB Seitz

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