May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Comparison of Visual Recovery and Astigmatism in 24-Bite Running Penetrating Keratoplasty Performed With a Femtosecond Laser "Zig-Zag" Incision Versus Conventional Trephination
Author Affiliations & Notes
  • M. Farid
    Ophthalmology, University of California-Irvine, Irvine, California
  • W. Chamberlain
    Ophthalmology, University of California-Irvine, Irvine, California
  • A. Lin
    Ophthalmology, University of California-Irvine, Irvine, California
  • R. F. Steinert
    Ophthalmology, University of California-Irvine, Irvine, California
  • Footnotes
    Commercial Relationships  M. Farid, None; W. Chamberlain, None; A. Lin, None; R.F. Steinert, Intralase, F.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 1960. doi:https://doi.org/
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      M. Farid, W. Chamberlain, A. Lin, R. F. Steinert; Comparison of Visual Recovery and Astigmatism in 24-Bite Running Penetrating Keratoplasty Performed With a Femtosecond Laser "Zig-Zag" Incision Versus Conventional Trephination. Invest. Ophthalmol. Vis. Sci. 2008;49(13):1960. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: : To evaluate visual outcomes and astigmatism in patients who underwent 24 bite-running penetrating keratoplasty (PKP) with the femtosecond laser "Zig-Zag" incision versus conventional trephination incision.

Methods: : A retrospective review of 30 eyes of 27 patients who had the femtosecond laser "Zig-Zag" PKP (Group A) and 14 eyes of 13 patients who had conventional PKP (Group B) were compared for visual recovery and astigmatism. All PKPs were closed with a 24-bite running suture technique.

Results: : By month 3, the average astigmatism was 2.2 D in Group A and 4.45 D in Group B. Throughout the follow-up period, the mean astigmatism remained under 3 D in Group A and above 3D in Group B. Of the patients with normal macular function, 86% of Group A and 11% of Group B had achieved BSCVA of ≥ 20/30 by month 3.

Conclusions: : The femtosecond laser generated "Zig-Zag" shaped incision leads to faster visual recovery and less induced astigmatism compared to conventional PKP.

Keywords: cornea: clinical science • transplantation • topography 
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