[Cataract surgery with implantation of toric silicone lenses for severe astigmatism after keratoplasty].

Abstract:

BACKGROUND:The treatment of high astigmatism after keratoplasty is often not possible with glasses or refractive corneal surgery, particularly in patients with anisometropia and contact lens incompatibility. METHODS:In 3 patients with cataract and high astigmatism after penetrating keratoplasty, phacoemulsification was performed via a 4 mm sclerocorneal tunnel incision. A toric silicone lens with Z-haptic was implanted in the bag (Type MS 6116 TU, Dr. Schmidt). All patients had high anisometropia and contact lens incompatibility. The follow-up was ten weeks, uncorrected and corrected visual acuity, corneal and total astigmatism were evaluated. RESULTS:A 68-year-old female presented with corneal astigmatism of 10 dpt. Keratoplasty was performed two years earlier. After implantation of a toric lens (+ 22.5 + 11.0 dpt.) uncorrected visual acuity increased from 1/50 to 20/40, corrected visual acuity increased from 20/30 to 20/25. A 78-year-old male presented with irregular corneal astigmatism of 6.5 dpt. Keratoplasty was performed 25 years previously. Due to high myopia (corneal radii 5.3/5.9 mm), implantation of a toric lens (- 3.0 + 7.0 dpt.) in the bag was combined with implantation of a spheric lens (- 6.0 dpt., Type MS 614, Dr. Schmidt) in the sulcus. Uncorrected visual acuity increased from light perception to 1/20, corrected visual acuity increased to 1/10. An 84-year-old female presented with irregular corneal astigmatism of 8.6 dpt. Keratoplasty was performed two years earlier. After implantation of a toric lens (+ 16.0 + 11.0 dpt.) uncorrected visual acuity increased to 20/50, corrected visual acuity increased from 20/100 to 20/25. During the follow-up all implanted lenses were well-centered and no significant IOL rotation was observed. CONCLUSION:Implantation of foldable toric silicone lenses during cataract surgery may improve considerably the uncorrected visual acuity by reducing the total astigmatism in patients with high astigmatism after keratoplasty. Preoperatively, a reliable keratometry is important.

journal_name

Klin Monbl Augenheilkd

authors

Buchwald HJ,Lang GK

doi

10.1055/s-2004-813167

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

489-94

issue

6

eissn

0023-2165

issn

1439-3999

journal_volume

221

pub_type

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