A yellow filter improves response times to low-contrast targets and traffic hazards

Lacherez, Philippe, Saeri, Alexander K., Wood, Joanne M., Atchison, David A. and Horswill, Mark S. (2013) A yellow filter improves response times to low-contrast targets and traffic hazards. Optometry and Vision Science, 90 3: 242-248. doi:10.1097/OPX.0b013e3182815783

Author Lacherez, Philippe
Saeri, Alexander K.
Wood, Joanne M.
Atchison, David A.
Horswill, Mark S.
Title A yellow filter improves response times to low-contrast targets and traffic hazards
Journal name Optometry and Vision Science   Check publisher's open access policy
ISSN 1040-5488
Publication date 2013-03
Sub-type Article (original research)
DOI 10.1097/OPX.0b013e3182815783
Volume 90
Issue 3
Start page 242
End page 248
Total pages 7
Place of publication Philadelphia, PA, United States
Publisher Lippincott Williams & Wilkins
Collection year 2014
Language eng
Formatted abstract
Purpose: Anecdotal evidence suggests that some sunglass users prefer yellow tints for outdoor activities, such as driving, and research has suggested that such tints improve the apparent contrast and brightness of real-world objects. The aim of this study was to establish whether yellow filters resulted in objective improvements in performance for visual tasks relevant to driving.

Methods: Response times of nine young (age [mean ± SD], 31.4 ± 6.7 years) and nine older (age, [mean ± SD], 74.6 ± 4.8) adults were measured using video presentations of traffic hazards (driving hazard perception task) and a simple low-contrast grating appeared at random peripheral locations on a computer screen. Response times were compared when participants wore a yellow filter (with and without a linear polarizer) versus a neutral density filter (with and without a linear polarizer). All lens combinations were matched to have similar luminance transmittances (~27%).

Results: In the driving hazard perception task, the young but not the older participants responded significantly more rapidly to hazards when wearing a yellow filter than with a luminance-matched neutral density filter (mean difference, 450 milliseconds). In the low-contrast grating task, younger participants also responded more quickly for the yellow filter condition but only when combined with a polarizer. Although response times increased with increasing stimulus eccentricity for the low-contrast grating task, for the younger participants, this slowing of response times with increased eccentricity was reduced in the presence of a yellow filter, indicating that perception of more peripheral objects may be improved by this filter combination.

Conclusions: Yellow filters improve response times for younger adults for visual tasks relevant to driving.
Keyword Yellow filter
Hazard perception
Polarizing filter
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Psychology Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Sun, 31 Mar 2013, 01:07:47 EST by System User on behalf of School of Psychology