Impact of age-related macular degeneration ...
Document type :
Article dans une revue scientifique
DOI :
PMID :
Permalink :
Title :
Impact of age-related macular degeneration on object searches in realistic panoramic scenes
Author(s) :
Thibaut, Miguel [Auteur]
Tran, Thi-Ha-Chau [Auteur]
Szaffarczyk, Sébastien [Auteur]
Boucart, Muriel [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Tran, Thi-Ha-Chau [Auteur]
Szaffarczyk, Sébastien [Auteur]
Boucart, Muriel [Auteur]

Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Journal title :
Clinical & Experimental Optometry
Abbreviated title :
Clin Exp Optom
Publication date :
2017-11-23
ISSN :
1444-0938
HAL domain(s) :
Sciences cognitives
English abstract : [en]
BACKGROUND: This study investigated whether realistic immersive conditions with dynamic indoor scenes presented on a large, hemispheric panoramic screen covering 180° of the visual field improved the visual search abilities ...
Show more >BACKGROUND: This study investigated whether realistic immersive conditions with dynamic indoor scenes presented on a large, hemispheric panoramic screen covering 180° of the visual field improved the visual search abilities of participants with age-related macular degeneration (AMD). METHOD: Twenty-one participants with AMD, 16 age-matched controls and 16 young observers were included. Realistic indoor scenes were presented on a panoramic five metre diameter screen. Twelve different objects were used as targets. The participants were asked to search for a target object, shown on paper before each trial, within a room composed of various objects. A joystick was used for navigation within the scene views. A target object was present in 24 trials and absent in 24 trials. The percentage of correct detection of the target, the percentage of false alarms (that is, the detection of the target when it was absent), the number of scene views explored and the search time were measured. RESULTS: The search time was slower for participants with AMD than for the age-matched controls, who in turn were slower than the young participants. The participants with AMD were able to accomplish the task with a performance of 75 per cent correct detections. This was slightly lower than older controls (79.2 per cent) while young controls were at ceiling (91.7 per cent). Errors were mainly due to false alarms resulting from confusion between the target object and another object present in the scene in the target-absent trials. CONCLUSION: The outcomes of the present study indicate that, under realistic conditions, although slower than age-matched, normally sighted controls, participants with AMD were able to accomplish visual searches of objects with high accuracy.Show less >
Show more >BACKGROUND: This study investigated whether realistic immersive conditions with dynamic indoor scenes presented on a large, hemispheric panoramic screen covering 180° of the visual field improved the visual search abilities of participants with age-related macular degeneration (AMD). METHOD: Twenty-one participants with AMD, 16 age-matched controls and 16 young observers were included. Realistic indoor scenes were presented on a panoramic five metre diameter screen. Twelve different objects were used as targets. The participants were asked to search for a target object, shown on paper before each trial, within a room composed of various objects. A joystick was used for navigation within the scene views. A target object was present in 24 trials and absent in 24 trials. The percentage of correct detection of the target, the percentage of false alarms (that is, the detection of the target when it was absent), the number of scene views explored and the search time were measured. RESULTS: The search time was slower for participants with AMD than for the age-matched controls, who in turn were slower than the young participants. The participants with AMD were able to accomplish the task with a performance of 75 per cent correct detections. This was slightly lower than older controls (79.2 per cent) while young controls were at ceiling (91.7 per cent). Errors were mainly due to false alarms resulting from confusion between the target object and another object present in the scene in the target-absent trials. CONCLUSION: The outcomes of the present study indicate that, under realistic conditions, although slower than age-matched, normally sighted controls, participants with AMD were able to accomplish visual searches of objects with high accuracy.Show less >
Language :
Anglais
Audience :
Non spécifiée
Administrative institution(s) :
Université de Lille
CNRS
CHU Lille
CNRS
CHU Lille
Research team(s) :
Équipe Action, Vision et Apprentissage (AVA)
Submission date :
2019-02-13T14:18:03Z
2019-11-12T15:39:22Z
2019-11-12T15:39:22Z