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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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ORIGINAL ARTICLE
Year : 2007  |  Volume : 14  |  Issue : 2  |  Page : 54-57

Two-stage LASIK for correction of refractive errors after penetrating keratoplasty


Anterior Segment Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia

Correspondence Address:
Abdul-Elah Al-Towerki
King Khaled Eye Specialist Hospital, PO Box 7191, Riyadh 11462
Saudi Arabia
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Source of Support: None, Conflict of Interest: None


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Purpose. To evaluate the efficiency of two-stage laser-assisted in situ keratomileusis (LASIK) for correction of spherical anisometropia and high astigmatism after penetrating keratoplasty (PKP). Patients and Methods. Retrospective analysis of 8 eyes from 8 patients who underwent two-stage LASIK after PKP for keratoconus. Results. After flap creation, there was a mean spherical shift of 2.32 diopters (D) (P < .01) and a mean astigmatic shift of 2.19 D (P < .01). After excimer laser treatment, there was a mean spherical shift of 2.41 D (P < .01) and a mean astigmatic shift of 3.97 D (P < .01). The spherical equivalent after the two-stage treatment was within 1 D of emmetropia in 7 eyes (87.5%). No patient experienced a reduction of best spectacle-corrected visual acuity (BSCVA) or uncorrected visual acuity (UCVA) after corneal flap creation or excimer laser treatment. The UCVA was 20/40 or better in 7 eyes (97.5%) and 20/30 or better in 5 eyes (62.5%), 6 months after completion of treatment. Conclusion. LASIK is effective in reducing spherical anisometropia and high astigmatism after PKP. Because of a statistically significant change in refractive error after creation of the LASIK flap, it is recommended that the procedure be performed in 2 stages.


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