Abstract
To assess the ocular optical quality results as well as theastigmatic changes after wavefront-guided laser insitu keratomileusis (LASIK) in eyes with myopic astigmatism. Instituto Clínico-Quirúrgico Oftalmológico, Bilbao, Vizcaya, Spain. Prospective case series. Thirty-three eyes having wavefront-guided LASIK with the Star S4IR excimer laser combined with the iDesign system were enrolled in the study. Changes in visual acuity, refraction, higher-order aberrations, and ocular scattering index (OSI) were evaluated during a 3-month follow-up. The Alpins method was used to analyze the astigmatic changes. A significant reduction was observed in refraction (P<.001), with significant improvement in uncorrected (UDVA) and corrected (CDVA) distance visual acuities (P<.001). All eyes had a spherical equivalent within ±0.50 diopter (D) and UDVA of 20/25 or better at 90days after surgery. A total of 27.3% of eyes gained lines of CDVA. No significant changes were observed in primary coma and spherical aberration (P≥.551). Likewise, no significant changes were observed in OSI (P=.361), with a mean 90-day postoperative value of 0.66±0.58 (SD). A significant change to negative values of the magnitude of error (P=.007) and a significant decrease in the correction index (P=.004) were observed during the follow-up, with mean 90-day postoperative values of -0.24±0.28 D and 0.86±0.17 D, respectively. Wavefront-guided LASIK using a high-resolution aberrometer provided safe and efficacious correction of myopic astigmatism, with preservation of the ocular optical quality.
Published Version
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