Journal of Cataract & Refractive Surgery
Volume 30, Issue 7 , Pages 1418-1424, July 2004

Corneal aberrations after astigmatic keratotomy combined with laser in situ keratomileusis

  • Robert Montés-Micó, OD,MPhil

      Affiliations

    • Corresponding Author InformationReprint requests to Robert Montés-Micó, OD, MPhil, Research, Development and Innovation Department, Instituto Oftalmológico de Alicante, Universidad Miguel Hernández, Avenida Denia 111, 03015 Alicante, Spain.
    • Research, Development and Innovation Department, Instituto Oftalmológico de Alicante, School of Medicine, Universidad Miguel Hernández, Valencia, Spain
    • Alicante, and the Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain
  • ,
  • Gonzalo Muñoz, MD,PhD

      Affiliations

    • Research, Development and Innovation Department, Instituto Oftalmológico de Alicante, School of Medicine, Universidad Miguel Hernández, Valencia, Spain
    • Alicante, and the Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain
  • ,
  • César Albarrán-Diego

      Affiliations

    • Alicante, and the Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain
  • ,
  • Antonio Rodrı́guez-Galietero, MD,PhD

      Affiliations

    • Alicante, and the Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain
  • ,
  • Jorge L Alió, MD,PhD

      Affiliations

    • Research, Development and Innovation Department, Instituto Oftalmológico de Alicante, School of Medicine, Universidad Miguel Hernández, Valencia, Spain

Accepted 13 November 2003.

Abstract 

Purpose: To evaluate the optical aberrations in the cornea before and after astigmatic keratotomy (AK) combined with laser in situ keratomileusis (LASIK) in a group of patients with high myopic astigmatism.

Setting: Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain.

Methods: Twelve patients (24 eyes) with high myopic astigmatism (from 3.50 to 6.00 diopters) participated in the study. Astigmatic keratotomy was performed as the first step to reduce astigmatism; after 2 months, the residual refractive error was corrected with LASIK. Videokeratography measurements were conducted before and after each procedure. Topography maps were used to calculate the wavefront corneal aberrations for a 6.0 mm pupil diameter.

Results: Total, coma-like, and spherical-like aberrations increased significantly from preoperatively to post LASIK (×6.34, ×2.52, and ×10.50, respectively; P<.01). Astigmatic keratotomy significantly increased coma-like (×4.04; P<.01) and spherical-like (×5.66; P<.01) aberrations. After LASIK, the coma-like aberration was significantly reduced (×0.62; P = .008) and the spherical-like aberration was significantly increased (×1.86; P<.01).

Conclusion: Astigmatic keratotomy increased higher-order corneal aberrations, both coma-like and spherical-like, whereas LASIK performed after AK increased the spherical-like aberration and reduced the coma-like aberration.

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 None of the authors has a proprietary or financial interest in any material or method mentioned.

PII: S0886-3350(04)00016-1

doi:10.1016/j.jcrs.2003.11.057

Journal of Cataract & Refractive Surgery
Volume 30, Issue 7 , Pages 1418-1424, July 2004