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Abstract
To prospectively evaluate the safety, efficacy, predictability, and long-term stability of hyperopic laser in situ keratomileusis (LASIK) using the Star S2 excimer laser (Visx).Department of Ophthalmology, Stanford University School of Medicine, Stanford, California, USA.This study evaluated 41 eyes of 27 patients who had LASIK for the correction of spherical hyperopia. Patients were divided into 3 groups based on preoperative cycloplegic refraction: low hyperopia (less than +2.00 diopters [D]), medium hyperopia (+2.00 to +4.00 D), and high hyperopia (more than +4.00 D).In all eyes, the mean preoperative spherical equivalent (SE) was +2.53 D (range +0.75 to +5.25 D) and the mean attempted SE was +2.58 D (range +0.75 to +5.25 D). At the last visit (mean 5.29 years), the mean SE was +0.44 D +/- 0.69 (SD) in the low hyperopia group, +0.58 +/- 0.56 D in the medium hyperopia group, and +0.59 +/- 1.18 D in the high hyperopia group. The percentage of eyes within +/-1.00 D of emmetropia was 82.4%, 75.0%, and 66.7%, respectively (68.9% overall). The uncorrected visual acuity was 20/40 or better in 100% of eyes in the low hyperopia group, 91.7% in the medium hyperopia group, and 66.7% in the high hyperopia group (87.8% overall). The hyperopic shift between 1 year and the last visit was +0.18 D, +0.30 D, and +0.55 D, respectively (+0.40 D overall; range -1.25 to +2.63 D).Hyperopic LASIK using the Star S2 excimer laser was safe, effective, and predictable for hyperopia up to +4.10 D (mean of high group). A mild regression of the refractive effect was seen over the 5-year follow-up.
View details for DOI 10.1016/j.jcrs.2007.09.019
View details for Web of Science ID 000252909200017
View details for PubMedID 18242445