Microkeratome-induced reduction of astigmatism after penetrating keratoplasty

Am J Ophthalmol. 2001 Apr;131(4):507-8. doi: 10.1016/s0002-9394(00)00828-x.


Purpose: To report the reduction in postpenetrating keratoplasty astigmatism with the use of the microkeratome to create a lamellar corneal flap as the first stage in a two-step laser in situ keratomileusis.

Methods: The hansatome microkeratome was used to create a lamellar corneal flap in a 24-year-old man with a net corneal astigmatism of 7.3 diopters, 2 years after penetrating keratoplasty. No laser ablation was performed.

Results: The net corneal astigmatism reduced to 3.9 diopters at 1 month and 2.3 diopters at 3 months of follow-up, without any laser ablation.

Conclusion: Laser in situ keratomileusis may be performed as a two-stage procedure, because the lamellar corneal flap alone may reduce postpenetrating keratoplasty astigmatism.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Astigmatism / etiology
  • Astigmatism / prevention & control*
  • Cornea / surgery*
  • Corneal Topography
  • Humans
  • Keratomileusis, Laser In Situ / instrumentation
  • Keratoplasty, Penetrating / adverse effects*
  • Male
  • Surgical Flaps*
  • Visual Acuity