Especially after LASIK for hyperopia, the objective refraction determined with the Nidek AR-K 900 autorefractor delivered erroneous results, which have implications for postoperative care and preoperative measurements for ocular surgery such as enhancement procedures or cataract surgery.
We present three patients who had laser in situ keratomileusis (LASIK) after corneal surgery as follow: 15 months after automated lamellar keratoplasty (ALK) for hyperopia, 6 months after ALK for hyperopia, and 2 years after penetrating keratoplasty (PKP). Although the first case was uneventful, intraoperative complications arose in the second case because the connection of the ALK-related flap to its stromal bed was insufficient. In the third case, the refractive error caused by PKP was corrected as shown by corneal topography and visual acuity measurement. In conclusion, LASIK after PKP can be considered a precise and safe procedure if 2 to 3 years pass between the procedures. An interval of 6 months between ALK and LASIK was too short, whereas 15 months after ALK for hyperopia, LASIK was performed without problems and delivered a good result.
In conclusion, LASIK is effective in the correction of myopia and myopic astigmatism. Although complications more frequently occurred in the correction of higher refractive errors, LASIK seems to be relatively safe compared with other refractive methods.
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