Artikel
Implantation of toric silicone lenses in the bag to correct high astigmatism after keratoplasty
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Autoren
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H.-J. Buchwald
- University Eye Hospital and Clinic, Ulm
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S. Höhn
- University Eye Hospital and Clinic, Ulm
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G. K. Lang
- University Eye Hospital and Clinic, Ulm
| Veröffentlicht: | 22. September 2004 |
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Gliederung
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Objective
The treatment of higher astigmatism after keratoplasty is often not possible with glasses or contact lenses in patients with anisometropia and contact lens incompatibility.
Methods
In 9 eyes of 8 patients with high astigmatism after penetrating keratoplasty phacoemulsification was performed via a 4mm sclerocorneal tunnel incision. A toric silicone lens with Z-haptic was implanted in the bag (Typ MS 6117 TU, Dr. Schmidt). The Follow-up was 6 months, uncorrected and corrected visual acuity, corneal and total astigmatism were evaluated.
Results
The mean uncorrected visual acuity before surgery was 0.14±0.12, which was improved to 0.6±0.17; mean best corrected visual acuity before surgery was 0.27±0.16, and 0.81±0.18 after surgery. The mean total astigmatism was 6.2±2,23 D and was reduced to 1.4±0.85 D after surgery. Mean corneal astigmatism before surgery was 6.2±2.29 D (range 3,25 -10 dpt.) and decreased to 4.4±1.56 D (range 2 - 7,5 dpt.) after surgery. During the follow-up all implanted lenses were well-centered and IOL rotation was not higher than 5°.
Conclusions
Implantation of foldable toric silicone lenses during cataract surgery improves especially the uncorrected visual acuity in patients with high astigmatism after keratoplasty. Total astigmatism was considerably reduced. The excellent rotational stability of the implanted lenses is important especially for the uncorrected visual acuity.
