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Title: Laser in situ keratomileusis to correct post-keratoplasty astigmatism : 1-Step versus 2-step procedure
Authors: Alió, Jorge L.
Javaloy, Jaime
Osman, Amr A.
Galvis, Virgilio
Tello, Alejandro
Haroun, Hazem E.
Issue Date: Nov-2004
Series/Report no.: Journal of Cataract and Refractive Surgery;Vol. 30 (11), pp. 2303-2310. 2004
Abstract: Purpose: To investigate the correction of post-penetrating keratoplasty (PKP) astigmatism using laser in situ keratomileusis (LASIK). Visual and refractive outcomes were evaluated after LASIK was performed in 1 step (lamellar cut and ablation in 1 procedure) or 2 steps (lamellar cut then ablation in 2 successive procedures). Setting: Department of Cornea and Refractive Surgery, Vissum–Instituto Oftalmológico de Alicante, University of Miguel Hernández, Alicante, Spain. Methods: In this prospective observational study, 22 consecutive eyes were divided into 2 groups depending on the LASIK procedure performed to correct post-PKP astigmatism. Group 1 (1-step LASIK) included 11 eyes and Group 2 (2-step LASIK), 11 eyes. The patients were followed for 6 months. Results: A statistically significant improvement was obtained in Group 2 with a mean vector analysis result of the cylinder of –4.37 diopters (D) ± 1.79 (SD) (P = .018). In Group 1, the mean astigmatism correction was 2.38 ± 1.71 D. The number of reoperations and residual refractive defects were significantly better in Group 2. Conclusion: The 2-step technique improved the accuracy of excimer laser correction of post-PKP astigmatism.
Description: 8 p.
ISSN: 0886-3350
Appears in Collections:DCABA. Artículos de Investigación

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