Clinical outcomes of wavefront-guided laser in situ keratomileusis to treat moderate-to-high astigmatism
نویسندگان
چکیده
PURPOSE The purpose of this study was to evaluate the refractive and visual outcomes of wavefront-guided laser in situ keratomileusis (LASIK) in eyes with myopic astigmatism and cylindrical component ≥2.0 diopter (D). METHODS In this retrospective study, 611 eyes that underwent LASIK for simple or compound myopic astigmatism were analyzed. Preoperative refractive cylinder ranged from -2.00 D to -6.00 D (mean -2.76±0.81 D), and the sphere was between 0.00 D and -9.75 D (mean -2.79±2.32 D). Predictability, visual outcomes, and vector analysis of changes in refractive astigmatism were evaluated. RESULTS At 3 months after LASIK, 83.8% of eyes had uncorrected distance visual acuity of 20/20 or better, 90.3% had manifest spherical equivalent within ±0.50 D, and 79.1% had residual refractive cylinder within ±0.50 D of intended correction. The mean correction ratio for refractive cylinder was 0.92±0.14, the mean error of angle was -0.45°±2.99°, and the mean error vector was 0.37±0.38 D. A statistically significant correlation was found between the error of magnitude (arithmetic difference in the magnitudes between surgically induced refractive correction and intended refractive correction) and the intended refractive correction (r=0.26, P<0.01). CONCLUSION Wavefront-guided LASIK for the correction of myopic astigmatism is safe, effective, and predictable.
منابع مشابه
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The use of wavefront-guided algorithms for treatment has increased over the past decade with estimates that up to 50 percent of all laser in situ keratomileusis (LASIK) procedures are now performed with this approach1. Although originally intended to correct higher order aberrations, the use of wavefront-guided algorithms, particularly those with iris-registration and tracking, have been shown ...
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