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Lamellar keratotomy to correct astigmatism in cataract surgery

  • Clinical Investigation
  • Published:
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Abstract

Background

For the correction of astigmatism in cataract surgery, several incisional procedures have been developed. In this study, a modification of lamellar keratotomy was evaluated to correct astigmatism in cataract surgery.

Methods

Prospectively 32 eyes of 25 patients with a preoperative astigmatism greater than 1.5 D were studied. All patients were treated with lamellar keratotomy with an incision width of 6 mm and a radial length of 1.5 mm placed at the limbus in the steep meridian. Phacoemulsification and IOL implantation were then performed through a 3.2-mm corneal tunnel incision. After 4 weeks, mean astigmatism, mean corneal power changes, and mean surgically-induced astigmatism derived from vector analysis in the central 3-mm optical zone were determined.

Results

The mean astigmatism decreased from 2.75±0.80 D preoperatively to 1.58±0.91 D after 4 weeks (P<0.001). There were no significant changes (P=0.614) of the mean corneal power. The mean surgically-induced astigmatism was 2.59±1.50 D. The induced changes were more accentuated in superior incisions. In corneal topography, 78% of the treated eyes revealed a characteristic threefold pattern of the mid-peripheral cornea postoperatively, which impaired the corneal optical performance in ray-tracing analysis.

Conclusions

Lamellar keratotomy effectively reduced high preoperative astigmatism in cataract surgery. This surgical approach was combined with a superior, temporal, or oblique corneal incision.

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Acknowledgments

The authors have no commercial, proprietary, or financial interest in any research or devices described in the presented study.

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Authors and Affiliations

  1. Klinik für Augenheilkunde, Vivantes Klinikum Neukölln, Rudower Str. 48, 12351, Berlin, Germany

    Christopher Wirbelauer, Tiziana Böhm, Heike Häberle & Duy Thoai Pham

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  1. Christopher Wirbelauer
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  2. Tiziana Böhm
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  3. Heike Häberle
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  4. Duy Thoai Pham
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Correspondence to Christopher Wirbelauer.

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Wirbelauer, C., Böhm, T., Häberle, H. et al. Lamellar keratotomy to correct astigmatism in cataract surgery. Graefe's Arch Clin Exp Ophthalmol 243, 243–249 (2005). https://doi.org/10.1007/s00417-004-0968-x

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  • DOI: https://doi.org/10.1007/s00417-004-0968-x

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