Corneal wavefront-guided customized laser in situ keratomileusis after penetrating keratoplasty.

Abstract

PURPOSE:

To assess the efficacy and safety of corneal wavefront-guided custom laser in situ keratomileusis (LASIK) to correct refractive errors and higher-order aberrations (HOAs) after penetrating keratoplasty (PKP).

SETTING:

Beyoglu Eye Training and Research Hospital, Istanbul, Turkey.

DESIGN:

Noncomparative case series.

METHODS:

The study comprised consecutive patients who were unable to tolerate spectacles or contact lenses for the correction of anisometropia after PKP and had corneal wavefront-guided custom LASIK. The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, manifest refraction spherical equivalent (MRSE), and corneal HOAs were recorded before and after LASIK.

RESULTS:

The study evaluated 11 eyes (10 patients). The mean follow-up after LASIK was 24.3 months ± 11.7 (SD) (range 9 to 36 months). The mean MRSE was -2.97 ± 1.66 diopters (D) (range -0.50 to -5.38 D) preoperatively and -0.88 ± 0.96 D (range -2.75 to 0.5 D) postoperatively. The mean total higher-order root mean square (RMS) was 4.65 ± 1.14 μm (range 2.26 to 5.94 μm) preoperatively and 2.71 ± 1.31 μm (range 1.22 to 5.33 μm) postoperatively. Postoperatively, the UDVA improved in 7 eyes and remained unchanged in 4 eyes. The CDVA improved in all eyes postoperatively even cases in which the attempted astigmatic correction was not totally achieved.

CONCLUSIONS:

Corneal wavefront-guided custom LASIK after PKP did not totally correct both refractive errors and HOAs because of the high volume of laser ablation required and inadequate corneal stromal thickness.

• Authors: Serhat Imamoglu, Vedat Kaya, Deniz Oral, Irfan Perente, Berna Basarir, Omer Faruk Yilmaz
• Journal: Journal of cataract and refractive surgery (J Cataract Refract Surg) Vol. 40 Issue 5 Pg. 785-92 (May 2014) ISSN: 1873-4502 [Electronic] United States
• PMID: 24767912 (Publication Type: Case Reports, Journal Article)
• Copyright: Copyright © 2014 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

Topics

• Adult
• Astigmatism (physiopathology, surgery)
• Cornea (physiopathology)
• Corneal Topography
• Corneal Wavefront Aberration (physiopathology, surgery)
• Female
• Humans
• Keratoconus (physiopathology, surgery)
• Keratomileusis, Laser In Situ (methods)
• Keratoplasty, Penetrating
• Lasers, Excimer (therapeutic use)
• Male
• Middle Aged
• Myopia (physiopathology, surgery)
• Postoperative Care
• Refraction, Ocular (physiology)
• Retrospective Studies
• Treatment Outcome
• Visual Acuity (physiology)
• Young Adult