TY - JOUR
T1 - Reduced effect of glare disability on driving performance in patients with blue light-filtering intraocular lenses
AU - Gray, Robert
AU - Perkins, SA
AU - Suryakumar, R
AU - Neuman, B
AU - Maxwell, WA
PY - 2011/1/1
Y1 - 2011/1/1
N2 - 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.
AB - 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.
U2 - 10.1016/j.jcrs.2010.07.034
DO - 10.1016/j.jcrs.2010.07.034
M3 - Article
C2 - 21183098
VL - 37
SP - 38
EP - 44
JO - Journal of cataract and refractive surgery
JF - Journal of cataract and refractive surgery
IS - 1
ER -