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Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability

PURPOSE: The mechanisms underlying the elevated crash rates of older drivers with glaucoma are poorly understood. A key driving skill is timely detection of hazards; however, the hazard detection ability of drivers with glaucoma has been largely unexplored. This study assessed the eye movement patte...

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Autores principales: Lee, Samantha Sze-Yee, Black, Alex A., Wood, Joanne M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453592/
https://www.ncbi.nlm.nih.gov/pubmed/28570621
http://dx.doi.org/10.1371/journal.pone.0178876
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author Lee, Samantha Sze-Yee
Black, Alex A.
Wood, Joanne M.
author_facet Lee, Samantha Sze-Yee
Black, Alex A.
Wood, Joanne M.
author_sort Lee, Samantha Sze-Yee
collection PubMed
description PURPOSE: The mechanisms underlying the elevated crash rates of older drivers with glaucoma are poorly understood. A key driving skill is timely detection of hazards; however, the hazard detection ability of drivers with glaucoma has been largely unexplored. This study assessed the eye movement patterns and visual predictors of performance on a laboratory-based hazard detection task in older drivers with glaucoma. METHODS: Participants included 30 older drivers with glaucoma (71±7 years; average better-eye mean deviation (MD) = −3.1±3.2 dB; average worse-eye MD = −11.9±6.2 dB) and 25 age-matched controls (72±7 years). Visual acuity, contrast sensitivity, visual fields, useful field of view (UFoV; processing speeds), and motion sensitivity were assessed. Participants completed a computerised Hazard Perception Test (HPT) while their eye movements were recorded using a desk-mounted Tobii TX300 eye-tracking system. The HPT comprises a series of real-world traffic videos recorded from the driver’s perspective; participants responded to road hazards appearing in the videos, and hazard response times were determined. RESULTS: Participants with glaucoma exhibited an average of 0.42 seconds delay in hazard response time (p = 0.001), smaller saccades (p = 0.010), and delayed first fixation on hazards (p<0.001) compared to controls. Importantly, larger saccades were associated with faster hazard responses in the glaucoma group (p = 0.004), but not in the control group (p = 0.19). Across both groups, significant visual predictors of hazard response times included motion sensitivity, UFoV, and worse-eye MD (p<0.05). CONCLUSIONS: Older drivers with glaucoma had delayed hazard response times compared to controls, with associated changes in eye movement patterns. The association between larger saccades and faster hazard response time in the glaucoma group may represent a compensatory behaviour to facilitate improved performance.
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spelling pubmed-54535922017-06-12 Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability Lee, Samantha Sze-Yee Black, Alex A. Wood, Joanne M. PLoS One Research Article PURPOSE: The mechanisms underlying the elevated crash rates of older drivers with glaucoma are poorly understood. A key driving skill is timely detection of hazards; however, the hazard detection ability of drivers with glaucoma has been largely unexplored. This study assessed the eye movement patterns and visual predictors of performance on a laboratory-based hazard detection task in older drivers with glaucoma. METHODS: Participants included 30 older drivers with glaucoma (71±7 years; average better-eye mean deviation (MD) = −3.1±3.2 dB; average worse-eye MD = −11.9±6.2 dB) and 25 age-matched controls (72±7 years). Visual acuity, contrast sensitivity, visual fields, useful field of view (UFoV; processing speeds), and motion sensitivity were assessed. Participants completed a computerised Hazard Perception Test (HPT) while their eye movements were recorded using a desk-mounted Tobii TX300 eye-tracking system. The HPT comprises a series of real-world traffic videos recorded from the driver’s perspective; participants responded to road hazards appearing in the videos, and hazard response times were determined. RESULTS: Participants with glaucoma exhibited an average of 0.42 seconds delay in hazard response time (p = 0.001), smaller saccades (p = 0.010), and delayed first fixation on hazards (p<0.001) compared to controls. Importantly, larger saccades were associated with faster hazard responses in the glaucoma group (p = 0.004), but not in the control group (p = 0.19). Across both groups, significant visual predictors of hazard response times included motion sensitivity, UFoV, and worse-eye MD (p<0.05). CONCLUSIONS: Older drivers with glaucoma had delayed hazard response times compared to controls, with associated changes in eye movement patterns. The association between larger saccades and faster hazard response time in the glaucoma group may represent a compensatory behaviour to facilitate improved performance. Public Library of Science 2017-06-01 /pmc/articles/PMC5453592/ /pubmed/28570621 http://dx.doi.org/10.1371/journal.pone.0178876 Text en © 2017 Lee et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Lee, Samantha Sze-Yee
Black, Alex A.
Wood, Joanne M.
Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title_full Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title_fullStr Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title_full_unstemmed Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title_short Effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
title_sort effect of glaucoma on eye movement patterns and laboratory-based hazard detection ability
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453592/
https://www.ncbi.nlm.nih.gov/pubmed/28570621
http://dx.doi.org/10.1371/journal.pone.0178876
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