Efficacy of spherical aberration correction based on contact lens power |
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| Affiliation: | 1. Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan;2. Hamada Eye Clinic, Osaka, Japan;1. School of Medicine, University of Toronto, 1 King''s College Circle, Toronto, Ontario M5S 1A8, Canada;2. Department of Clinical Epidemiology & Biostatistics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada;3. Institute of Health Policy, Management & Evaluation, University of Toronto, 4th Floor, 155 College St, Toronto, Ontario M5T 3M6, Canada;4. Systematic Overviews through advancing Research Technology (SORT), Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, University of Toronto, 686 Bay Street, Toronto, Ontario M5G 0A4, Canada;5. Department of Anesthesia & Pain Medicine, The Hospital for Sick Children, 555 University Ave., Toronto, Ontario M5G 1X8, Canada;6. Clinical Epidemiology and Public Health Department, Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau), C/ Sant Antoni Maria Claret, 167, Pavelló 18, planta 0, 08025 Barcelona, Spain;7. Evidence-Based Dentistry Unit, Faculty of Dentistry, Universidad de Chile, Sergio Livingstone 943, Santiago, Chile;8. Department of Medicine, Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O Higgins 340, Santiago, Región Metropolitana, Chile;9. Department of Internal Medicine, American University of Beirut Medical Center, P.O. Box: 11-0236, Riad-El-Solh, Beirut 1107 2020, Lebanon;10. Chinese Evidence-based Medicine Center, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu 610041, China;11. Basel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical Research, University Hospital Basel, Spitalstrasse 12, Basel 4031, Switzerland;12. Michael G. DeGroote Institute for Pain Research and Care, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada;13. Department of Anesthesia, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada;14. Área de investigaciones, Facultad de Medicina, Universidad de La Sabana, Campus del Puente del Común Km, 7 Autopista Norte, Chía, Colombia;15. Internal Medicine Residency Program, University of Illinois, Urbana-Champaign, 506 S. Mathews Ave., Urbana, IL 61801, USA;p. Departments of Medicine and Biomedical & Health Informatics, University of Missouri-Kansas City, School of Medicine, M4-303, 2411 Holmes St, Kansas City, MO, USA;q. CCSS Permanent Medical Advisor, Health Care Development Division, IHCAI Foundation & Central America Cochrane, 1st Ave., 35th and 37th St, Number 3530, Barrio Escalante, San José, Costa Rica;r. Departments of Urology and Public Health, Helsinki University Hospital and University of Helsinki, Haartmaninkatu 4, Helsinki 00029, Finland;s. Norwegian Knowledge Centre for the Health Services, P.O. Box 4404 Nydalen, Oslo 0403 Norway;t. CIBER of Epidemiology and Public Health (CIBERESP-IIB Sant Pau), Av. Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain;1. Optometry Department, International Branch of Shahid Beheshti University of Medical Sciences, Tehran, Iran;2. Optometry Department, Iran University of Medical Sciences, Tehran, Iran;3. Ophthalmology Department, Razavi Hospital, Mashhad, Iran;4. Refractive Errors Research Center, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran |
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| Abstract: | PurposeTo investigate the efficacy of spherical aberration (SA) correction with aspheric contact lenses (aspheric lenses) based on lens power, and compare the results with those of spherical contact lenses (spherical lenses).MethodsOcular higher-order aberrations were measured with a wavefront sensor, in 11 myopic subjects wearing an aspheric lens (Medalist Fresh fit (PUREVISION 2 HD); Bausch + Lomb) or a spherical lens (ACUVUE Oasys; Johnson & Johnson). Six different lens powers (−7.00 diopters (D), −5.00 D, −3.00 D, −1.00 D, +1.00 D, +3.00 D) were used for all subjects. The amount of SA correction from the contact lens at each power was calculated as the difference between SA with the contact lens on-eye and SA of the eye alone.ResultsFor the spherical lenses, SA correction was close to 0.00 μm for the +1.00 D lens, became more positive as the labeled lens power increased and became more negative as the labeled lens power decreased. For the aspheric lenses, SA correction was consistent, from −0.15 to −0.05 μm, for all lens powers except for the −1.00 D lens. SA correction for the spherical and aspheric lenses was significantly different at −7.00 D (p = 0.040), −3.00 D (p = 0.015), −1.00 D (p < 0.001), +1.00 D (p = 0.006), and +3.00 D (p < 0.001) powers.ConclusionAn aspheric lens is capable of correcting SA at different lens powers, and has SA correction in the range of −0.15 to −0.05 μm over a 6 mm aperture. |
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| Keywords: | Aspheric contact lens Spherical aberration Contact lens power |
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