Prospective, randomized, double-blind, contralateral eye comparison of myopic LASIK with optimized aspheric or prolate ablations
| Autor: | Harkaran S Bains, Arturo Chayet |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Adult
Male medicine.medical_specialty Visual acuity genetic structures Adolescent medicine.medical_treatment media_common.quotation_subject Corneal Stroma Keratomileusis Laser In Situ Visual Acuity Keratomileusis Surgical Flaps Contrast Sensitivity Young Adult Double-Blind Method Ophthalmology Surveys and Questionnaires medicine Myopia Contrast (vision) Humans Prospective Studies Dioptre media_common medicine.diagnostic_test business.industry LASIK Astigmatism Corneal Topography Middle Aged Corneal topography eye diseases Spherical aberration Aberrations of the eye Treatment Outcome Surgery Female Lasers Excimer sense organs medicine.symptom business |
| Zdroj: | Journal of refractive surgery (Thorofare, N.J. : 1995). 28(2) |
| ISSN: | 1081-597X |
| Popis: | PURPOSE: To compare the postoperative outcomes of aspheric or prolate LASIK for myopia and myopic astigmatism. METHODS: In this double-blind, bilateral, randomized trial, 40 patients (80 eyes) with −0.75 to −7.00 diopters (D) of manifest refraction spherical equivalent (MRSE) underwent optimized aspheric treatment zone ablation (OATz group) in 1 eye and optimized prolate ablation (OPA group) in the fellow eye. Six-month postoperative outcomes were compared for MRSE and visual acuity, contrast sensitivity, patient satisfaction, ocular higher order aberrations (HOAs), and spherical aberration. The Wilcoxon signed rank test, Mann-Whitney U test, and paired t test were used for testing differences between groups. P RESULTS: Postoperatively, 36 patients (72 eyes) were evaluated. The MRSE was −0.07±0.23 D for the OPA group and +0.02±0.24 D for the OATz group ( P >.05). Two (5%) eyes in the OPA group and 1 (3%) eye in the OATz group ( P =.114) lost 1 line of corrected distance visual acuity. Postoperative visual acuity was not statistically different between groups ( P >.05). Statistically lower change was noted in spherical aberration (0.011 μm) in the OPA group versus the OATz group (0.099 μm) ( P P =.035). No statistically significant differences were noted in photopic, mesopic, or glare contrast sensitivity and patient satisfaction between groups ( P >.05, for all comparisons). CONCLUSIONS: The refractive and visual outcomes of OPA and OATz were equivalent. However, the postoperative optical quality of OPA-treated eyes was better. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|