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Einjahresergebnisse nach LASEK

Retrospektive Analyse mit Hilfe der Refraktionsmatrix bei der Korrektur von mittlerer Myopie und myopem Astigmatismus

LASEK: results after 1 year

Retrospective analysis based on the dioptric power matrix for moderate myopic and astigmatic correction

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Zusammenfassung

Hintergrund

Es wurden Ergebnisse der LASEK zur Korrektur von mittlerer Myopie und myopem Astigmatismus mit Hilfe der Refraktionsmatrix untersucht.

Patienten und Methode

In diese retrospektive Analyse wurden 54 myope Augen eingeschlossen, die mit LASEK behandelt und mindestens ein Jahr nachbeobachtet wurden. Durch 25–45 s lange Exposition der Hornhaut mit 20%igem Ethanol wurde ein Epithellappen mit superiorem Hinge präpariert. Die Stromaoberfläche wurde mit 2 verschiedenen Excimerlasern abladiert. Der Epithellappen wurde reponiert und eine Verbandslinse appliziert. Untersucht wurden die manifeste Refraktion mit der Matrixmethode nach Kaye, der unkorrigierte und der bestkorrigierte Visus und die Nachbehandlungsrate.

Ergebnisse

Die mittlere manifeste Refraktion zu den verschiedenen Zeitpunkten ist in Tabelle 1 dargestellt. Die unkorrigierte Sehschärfe betrug nach einer Woche in 33% der Augen und in der Zeit zwischen 3 Monaten und einem Jahr postoperativ in mehr als 53% der Fälle 1,0. Der Sicherheitsindex blieb mindestens bei 0,98 bei den Kontrollen nach einem Monat im ersten postoperativen Jahr. Der Effektivitätsindex im selben Zeitraum schwankte zwischen 0,91 und 0,98.

Schlussfolgerung

LASEK zur Korrektur der mittleren Myopie und des myopen Astigmatismus scheint eine sichere und effiziente Option zu sein.

Abstract

Purpose

The aim of this study was to assess astigmatism magnitude and axis changes based on the dioptric power matrix in low to moderate levels of myopia and astigmatism treated with LASEK.

Patients and methods

This retrospective analysis included 54 myopic eyes treated with LASEK with a minimum follow-up of 12 months. An epithelial flap was created by 25–45 s of 20% alcohol exposure. The corneal surface was ablated using two different excimer lasers and nomogram adjustment. The flap was repositioned and a bandage applied to the contact lens. Main outcome measures were manifest refraction as calculated with the dioptric power matrix, UCVA, BSVCA, and retreatment rate.

Results

Mean manifest refraction is shown in table 2 (Tabelle 2). UCVAs of 20/20 or better were found in 33% of eyes at 1 week and in more than 53% at 3 months to 1 year. The safety index remained ≥0.98 after postoperative week 4. The efficacy index varied between 0.91 and 0.98 after 1 month.

Conclusion

LASEK for correction of low to moderate myopia and astigmatism seems to be a safe, effective, and stable option.

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Authors and Affiliations

  1. Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Boston, MA, USA

    S. Taneri & D. T. Azar

  2. Schepens Eye Research Institute, Harvard Medical School, Boston, MA, USA

    S. Taneri & D. T. Azar

  3. Zentrum für Refraktive Chirurgie Münster, Hohenzollernklinik, Hohenzollernring 57, 48145 , Münster

    S. Taneri

Authors
  1. S. Taneri
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  2. D. T. Azar
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Corresponding author

Correspondence to S. Taneri.

Additional information

Förderung: New England Corneal Transplant Fund, Research to Prevent Blindness Lew R. Wasserman Merit Award und Massachusetts Lions Eye Research Award (DTA).

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Taneri, S., Azar, D.T. Einjahresergebnisse nach LASEK. Ophthalmologe 102, 235–240 (2005). https://doi.org/10.1007/s00347-004-1097-y

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