Aberration-Free LASIK With Excimer Laser
Narrative Responses:
Purpose
To assess the efficacy, predictability, and safety of LASIK for the surgical correction of low to moderate myopia with astigmatism using the SCHWIND AMARIS 1050RS excimer laser.
Methods
98 eyes with a manifest refraction spherical equivalent (MRSE) from -0.50 to -8.25 diopters (D) (mean sphere: -3.42+/-1.63 D) with up to 3.50 D of astigmatism (mean: -0.67+/-0.75 D) were retrospectively reviewed. All eyes underwent treatment with the non wavefront-guided aspheric algorithm of the SCHWIND AMARIS 1050RS excimer laser working at 1050Hz repetition rate. All eyes were targeted for emmetropia. Refractive outcomes and corneal higher order aberrations were analyzed pre- and postoperatively. Visual quality was assessed using photopic and mesopic contrast sensitivity. Six-month postoperative outcomes are reported.
Results
At 6 months postoperative, the MRSE for all eyes was -0.11+/-0.22 D, and 98% (96/98) of eyes had MRSE within +/-0.50 D. Uncorrected visual acuity was 20/20 or better in 97% (95/98) of eyes, and no eyes lost 2 or more lines of best spectacle-corrected visual acuity. The total corneal higher order aberrations root-mean-square increased by 0.09 µm, spherical aberration increased by 0.08 µm, and coma increased by 0.04 µm postoperatively. Photopic and mesopic contrast sensitivity did not change 6 months postoperatively.
Conclusion
Treatment of myopia with astigmatism using the SCHWIND AMARIS 1050RS excimer laser is safe, efficacious, predictable, and maintains visual quality.