HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

What is the nature of the reach-and-grasp deficit in glaucoma?

Abstract : Purpose: Vision plays an important role in planning and executing manual prehension (reaching and grasping). We assess the impact of glaucoma on motor production, as a function of the visual exploration time available to the patients. Methods: We compared performance in two reach and grasp tasks determined by whether or not the participants (16 glaucoma patients, 14 age-matched and 18 young controls) had time to explore the objects before reaching and grasping a target object defined by its color. Results: Differences were observed between glaucoma patients and age-matched controls on movement duration and peak velocity (reaching phase) only when participants were not provided time to look at the objects before the movement (immediate condition). Conclusions: Glaucoma patients exhibited a motor disorder (grasping phase) only when they had no time to explore their environment before performing the reach-and-grasp task. The motor abnormalities in reaching phase observed in glaucoma patient in previous studies seem to result from difficulties in target identification rather than from visuo-motor deficits. From a clinical point of view, motor performances of glaucoma patients could be modulated by task, especially by temporal constraints of task.
Document type :
Journal articles
Complete list of metadata

https://hal-cnrs.archives-ouvertes.fr/hal-03018722
Contributor : Muriel Boucart Connect in order to contact the contributor
Submitted on : Monday, November 23, 2020 - 9:31:48 AM
Last modification on : Friday, January 21, 2022 - 5:50:01 PM
Long-term archiving on: : Wednesday, February 24, 2021 - 6:27:48 PM

File

Reach and Grasp in Glaucoma_20...
Files produced by the author(s)

Identifiers

Collections

Citation

Xavier Corveleyn, Quentin Lenoble, Jean Francois Rouland, Muriel Boucart. What is the nature of the reach-and-grasp deficit in glaucoma?. Journal of Glaucoma, Lippincott, Williams & Wilkins, 2020, ⟨10.1097/IJG.0000000000001555⟩. ⟨hal-03018722⟩

Share

Metrics

Record views

20

Files downloads

79