Description of iatrogenic corneal ectasia in patients without traditional risk factors

• Autores: Julio Ortega Usobiaga, R. Cobo Soriano, Fernando Llovet Osuna, Stephan Linke, J. Beltran-Sanz, Julio Baviera Sabater
• Localización: Journal of Emmetropia: Journal of Cataract, Refractive and Corneal Surgery, ISSN-e 2171-4703, Vol. 3, Nº. 2, 2012, págs. 83-89
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • PURPOSE: To describe the characteristics of corneal ectasia after laser in situ keratomileusis (LASIK) in patients with no traditional risk of ectasia in a single institution using the same surgical technique.

    METHODS: The records of 12 patients (16 eyes) who underwent LASIK and developed ectasia were retrospectively reviewed. All procedures were performed using the same microkeratome (Moria LSK One) and the same excimer laser (Technolas 217, Bausch & Lomb).

    No patients had any of the classic preoperative risk factors for ectasia, namely, attempted initial correction ≥12.00 D, total ablation depth >25% of preoperative central pachymetry, calculated or measured residual stromal bed <250 μm, preoperative central pachymetry <500 μm, preoperative mean keratometry >47.2 diopters (D), and no suspicious or abnormal signs in corneal topography.

    RESULTS: Time from surgery (LASIK or enhancement) to the presentation of ectasia was 4.78 ± V2.31 years (range, 1.88 to 8.37 years). The scoring system of Tabbara et al and that of Randleman et al were evaluated in our series.

    CONCLUSIONS: Patients can experience iatrogenic corneal ectasia despite fulfilling all relevant topographic and corneal thickness criteria. Our study shows that identifying highrisk eyes remains challenging in some cases.