Visual exploration of objects and scenes in patients with age-related macular degeneration

Thibaut, Miguel; Delerue, Céline; Boucart, Muriel; Tran, Thi-Ha-Chau

Type de document :

Article dans une revue scientifique

DOI :

10.1016/j.jfo.2015.08.010

PMID :

26707755

URL permanente :

http://hdl.handle.net/20.500.12210/4147

Titre :

Visual exploration of objects and scenes in patients with age-related macular degeneration

Auteur(s) :

Thibaut, Miguel [Auteur]
Delerue, Céline [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]

Titre de la revue :

Journal Français D'ophtalmologie

Nom court de la revue :

J Fr Ophtalmol

Numéro :

Pagination :

82-89

Date de publication :

2016-01

ISSN :

1773-0597

Discipline(s) HAL :

Sciences cognitives

Résumé en anglais : [en]

OBJECTIVE: Studies on people with age-related macular degeneration (AMD) have shown that they are able to detect briefly displayed objects and scenes with high accuracy (above 80%). However, in everyday life we explore our ...
Lire la suite >OBJECTIVE: Studies on people with age-related macular degeneration (AMD) have shown that they are able to detect briefly displayed objects and scenes with high accuracy (above 80%). However, in everyday life we explore our environment to search and to recognize objects. We assessed visual exploration in people with AMD during the identification of objects and scenes. METHOD: Twenty patients with AMD, fifteen age-matched and twelve young controls participated. We used colored photographs of isolated objects, natural scenes and objects in scenes, displayed centrally on a monitor. Participants were asked to name the objects and scenes. Ocular movements were recorded during the identification task. Scan paths, saccades, fixations, and accuracy were also recorded. RESULTS: People with AMD exhibited lower accuracy (by about 30%). Eye movement parameters were impaired with a larger number of saccades, shorter fixation durations and a larger scan path than controls. CONCLUSIONS: Our results are consistent with studies on artificial scotoma in normally sighted people showing that a central scotoma impairs oculomotricity. In contrast to detection tasks, people with central vision loss exhibit impaired performance in identification of objects and scenes (62 to 66%). Eye movement studies suggest that the lower accuracy in patients is likely due to the use of peripheral vision and instability of fixation.Lire moins >

Langue :

Anglais

Audience :

Non spécifiée

Établissement(s) :

Université de Lille
CNRS
CHU Lille

Collections :

Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Équipe(s) de recherche :

Équipe Action, Vision et Apprentissage (AVA)

Date de dépôt :

2019-02-13T14:48:24Z
2019-11-15T13:39:00Z

Numéro de version	Lien	Date de modification
2	20.500.12210/4147*	2019-11-15T13:37:19Z
1	20.500.12210/4147.1	2019-02-13T14:48:24Z

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Visual exploration of objects and scenes ...

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