Limbus-parallel keratotomies with compression sutures in treatment of high astigmatism after perforating keratoplasty: a vector analysis and topographic study

Klinische Monatsblätter für Augenheilkunde
E VilchisG O Naumann

Abstract

Visual acuity following penetrating keratoplasty is frequently limited by excessive astigmatism which cannot be compensated for with spectacles or contact lenses. The purpose of the study was to determine the effects of arcuate keratotomies and compression sutures on the amount and regularity of corneal astigmatism and on the visual acuity. Between June 1989 and August 1995, 56 eyes from 56 patients (30 women, 26 men, average age 53 +/- 16 years) with excessive post-penetrating keratoplasty astigmatism were treated with paired arcuate cuts and compression sutures 4.8 +/- 3.5 years after suture removal (45% keratoconus, 30% scars, 20% dystrophies). The incisions were made along the meridian of maximum dioptric power in a sector extending for 60 +/- 15 degrees (6 mm diameter). Incision depth was standardized at 450 microns. Compression sutures were placed 90 degrees away in the flat meridian. Eight patients required more than one procedure to obtain the desired effect. Best corrected visual acuity (VA), keratometric readings and topographic power maps were analyzed pre- and postoperatively. We categorized the topographic maps into six groups: from group 1 (regular) to group 6 (irregular). For description of the astigmatic change ...Continue Reading

Citations

Aug 18, 2000·Journal of Cataract and Refractive Surgery·J L Güell, M Vazquez
Nov 21, 2000·Journal of Cataract and Refractive Surgery·K BilgihanB Hasanreisoğlu
Aug 24, 2004·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·A ViestenzA Langenbucher
Dec 6, 2005·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·T BöhmD T Pham
Jun 23, 2007·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·Arne ViestenzA Langenbucher
Oct 19, 2016·Acta Ophthalmologica·Daniel BöhringerPhilipp Eberwein
Oct 31, 1998·Journal of Cataract and Refractive Surgery·E S Rosen
Jul 4, 2006·Journal of Cataract and Refractive Surgery·Frank Bochmann, Isac Schipper

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