Driving with Central Visual Field Loss II: How Scotomas above or below the Preferred Retinal Locus (PRL) Affect Hazard Detection in a Driving Simulator

PloS One
P Matthew BronstadEli Peli

Abstract

We determined whether binocular central scotomas above or below the preferred retinal locus affect detection of hazards (pedestrians) approaching from the side. Seven participants with central field loss (CFL), and seven age-and sex-matched controls with normal vision (NV), each completed two sessions of 5 test drives (each approximately 10 minutes long) in a driving simulator. Participants pressed the horn when detecting pedestrians that appeared at one of four eccentricities (-14°, -4°, left, 4°, or 14°, right, relative to car heading). Pedestrians walked or ran towards the travel lane on a collision course with the participant's vehicle, thus remaining in the same area of the visual field, assuming participant's steady forward gaze down the travel lane. Detection rates were nearly 100% for all participants. CFL participant reaction times were longer (median 2.27s, 95% CI 2.13 to 2.47) than NVs (median 1.17s, 95%CI 1.10 to 2.13; difference p<0.01), and CFL participants would have been unable to stop for 21% of pedestrians, compared with 3% for NV, p<0.001. Although the scotomas were not expected to obscure pedestrian hazards, gaze tracking revealed that scotomas did sometimes interfere with detection; late reactions usually o...Continue Reading

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Citations

Jul 28, 2016·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·P Matthew BronstadAlex R Bowers
Mar 17, 2010·Journal of Safety Research·Douglas J Gabauer, Hampton C Gabler
May 9, 2016·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Joanne M Wood, Alex A Black
Sep 4, 2019·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Joanne M Wood
Apr 19, 2020·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Christine Ting ZhangSteven W Savage
Oct 8, 2019·Translational Vision Science & Technology·Alex R BowersEli Peli
Feb 13, 2019·Accident; Analysis and Prevention·Christian LehsingAlex R Bowers

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