1. Reduced effect of glare disability on driving performance in patients with blue light-filtering intraocular lenses.
- Author
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Gray R, Perkins SA, Suryakumar R, Neuman B, and Maxwell WA
- Subjects
- Aged, Cross-Sectional Studies, Disability Evaluation, Female, Humans, Male, Prospective Studies, Prosthesis Design, Pseudophakia physiopathology, Visual Acuity physiology, Automobile Driving, Glare, Lens Implantation, Intraocular, Lenses, Intraocular, Phacoemulsification, Vision Disorders physiopathology
- Abstract
Purpose: To compare the effects of glare on driving performance in patients who had implantation of a blue light-filtering acrylic intraocular lens (IOL) and those who had implantation of an acrylic IOL with no blue-light filter., Setting: Department of Applied Psychology, Arizona State University, Mesa, Arizona, USA., Design: Cross-sectional study., Methods: Patients with a blue light-filtering AcrySof Natural SN60AT IOL (study group) and patients with an AcrySof SA60AT IOL with no blue-light filter (control group) who had good visual acuity and a valid driver's license performed left-turn maneuvers in a driving simulator in front of oncoming traffic. The safety margin (time to collision minus time taken to turn at intersection with oncoming traffic) was calculated. The measurements were repeated with a glare source simulating low-angle sun conditions (daytime driving)., Results: With glare, the safety margin was statistically significantly greater in the study group (n = 17) than in the control group (n = 17) (mean 2.534 seconds ± 0.488 [SD] and 2.116 ± 0.511 seconds, respectively) (P < .05). Comparing no-glare conditions and glare conditions, the study group had significantly lower glare susceptibility, fewer collisions with the oncoming car, and a lower impact on intersection approach speed than the control group., Conclusions: The IOL incorporating blue light-filtering technology significantly reduced glare disability and improved the driver's ability to safely execute a left turn with oncoming traffic in the presence of glare simulating low-angle sun conditions. The real-world benefit of this technology is presumably mediated by a stronger signal to detect approaching objects (motion-in-depth) as a result of a reduction in glare disability., Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. Additional disclosures are found in the footnotes., (Copyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
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