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First Author: M.Arbelaez OMAN
Co Author(s): S. Arba-Mosquera
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To assess the efficacy, predictability, and safety of LASIK for the surgical correction of low to moderate myopia with astigmatism using the SCHWIND AMARIS 1000 excimer laser
Muscat eye laser centre, Muscat, Oman
200 eyes with a manifest refraction spherical equivalent (MRSE) from -0.50 to -7.38 diopters (D) (mean sphere: -3.13+/-1.58 D) with up to -5.00 D of astigmatism (mean: -0.69+/-0.67 D) were enrolled. All eyes underwent treatment with the non wavefront-guided aspheric algorithm of the SCHWIND AMARIS 1000 excimer laser working at 1KHz 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.
At 6 months postoperative, the MRSE for all eyes was -0.21+/-0.20 D, and 96% (192/200) of eyes had MRSE within +/-0.50 D. Uncorrected visual acuity was 20/20 or better in 98% (196/200) 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 ṁm, spherical aberration increased by 0.08 ṁm, and coma increased by 0.04 ṁm postoperatively. Photopic and mesopic contrast sensitivity did not change 6 months postoperatively.
Treatment of myopia with astigmatism using the SCHWIND AMARIS 1000 excimer laser is safe, efficacious, predictable, and maintains visual quality.