Journal of cataract and refractive surgery · 2008
Topographically guided laser in situ keratomileusis for myopia using a customized aspherical treatment zone.
Оценочное исследованиеСтатьяМногоцентровое исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Dougherty Paul J, Waring George, Chayet Arturo, Fischer Jeffery, Fant Barbara, Bains Harkaran S
Аннотация
PURPOSE: To assess the efficacy, predictability, safety, and quality-of-life effects of topography-guided laser in situ keratomileusis (LASIK) for the correction of myopia with astigmatism using the EC-5000 CXII excimer laser equipped with a customized aspheric treatment zone algorithm.
SETTING: Ophthalmology clinics in the United States and Mexico.
METHODS: In a multicenter United States Food and Drug Administration study of topography-guided LASIK, 4 centers enrolled 135 eyes with a spherical manifest refraction error ranging from -0.50 to -7.00 diopters (D) and astigmatism ranging from 0.50 to 4.00 D. All eyes were targeted for emmetropia. Refractive outcomes, higher-order aberrations (HOAs), and contrast sensitivity were analyzed preoperatively and postoperatively. Patient satisfaction was assessed using 2 questionnaires.
RESULTS: Six months postoperatively, the mean manifest refraction spherical equivalent in all eyes was -0.09 D +/- 0.31 (SD); of the 131 eyes, 116 (88.55%) had an uncorrected visual acuity of 20/20 or better and 122 (93.13%) had an MRSE within +/-0.50 D. The best spectacle-corrected visual acuity (BSCVA) increased by 2 or more lines in 21 (16.03%) of 131 eyes; no eye lost 2 lines or more of BSCVA. The total ocular HOA increased by 0.04 microm. Patients reported significantly fewer night driving and glare/halo symptoms postoperatively than preoperatively.
CONCLUSION: Use of a customized aspherical treatment zone in eyes with myopia and astigmatism was safe, effective, and predictable and reduced symptoms associated with night driving, glare, and halos.
SETTING: Ophthalmology clinics in the United States and Mexico.
METHODS: In a multicenter United States Food and Drug Administration study of topography-guided LASIK, 4 centers enrolled 135 eyes with a spherical manifest refraction error ranging from -0.50 to -7.00 diopters (D) and astigmatism ranging from 0.50 to 4.00 D. All eyes were targeted for emmetropia. Refractive outcomes, higher-order aberrations (HOAs), and contrast sensitivity were analyzed preoperatively and postoperatively. Patient satisfaction was assessed using 2 questionnaires.
RESULTS: Six months postoperatively, the mean manifest refraction spherical equivalent in all eyes was -0.09 D +/- 0.31 (SD); of the 131 eyes, 116 (88.55%) had an uncorrected visual acuity of 20/20 or better and 122 (93.13%) had an MRSE within +/-0.50 D. The best spectacle-corrected visual acuity (BSCVA) increased by 2 or more lines in 21 (16.03%) of 131 eyes; no eye lost 2 lines or more of BSCVA. The total ocular HOA increased by 0.04 microm. Patients reported significantly fewer night driving and glare/halo symptoms postoperatively than preoperatively.
CONCLUSION: Use of a customized aspherical treatment zone in eyes with myopia and astigmatism was safe, effective, and predictable and reduced symptoms associated with night driving, glare, and halos.
Предметные рубрики MeSH
AdultAstigmatismContrast SensitivityCorneal TopographyHumansIntraoperative ComplicationsKeratomileusis, Laser In SituLasers, ExcimerMiddle AgedMyopiaPatient SatisfactionPostoperative ComplicationsQuality of LifeSurveys and QuestionnairesTreatment OutcomeUnited StatesUnited States Food and Drug AdministrationVisual Acuity