Wavefront-Guided Photorefractive Keratectomy with the Use of a New Hartmann-Shack Aberrometer in Patients with Myopia and Compound Myopic Astigmatism

Purpose. to assess refractive and visual outcomes and patient satisfaction of wavefront-guided photorefractive keratectomy (prk) in eyes with myopia and compound myopic astigmatism,with the ablation profile derived from a new hartmann-shack aberrometer. methods. in this retrospective study,662 eyes that underwent wavefront-guided prk with a treatment profile derived from a new generation hartmann-shack aberrometer (idesign aberrometer,abbott medical optics,inc.,santa ana,ca) were analyzed. the preoperative manifest sphere ranged from-0.25 to-10.75 d,and preoperative manifest cylinder was between 0.00 and-5.25 d. refractive and visual outcomes,vector analysis of the change in refractive cylinder,and patient satisfaction were evaluated. results. at 3 months,91.1% of eyes had manifest spherical equivalent within 0.50 d. the percentage of eyes achieving uncorrected distance visual acuity 20/20 or better was 89.4% monocularly and 96.5% binocularly. the mean correction ratio of refractive cylinder was 1.02 ± 0.43,and the mean error of angle was 0.00 ± 14.86° at 3 months postoperatively. self-reported scores for optical side effects,such as starburst,glare,halo,ghosting,and double vision,were low. conclusion. the use of a new hartmann-shack aberrometer for wavefront-guided photorefractive keratectomy resulted in high predictability,efficacy,and patient satisfaction. © 2015 steven c. schallhorn et al.