NCT04360291

Impact of Visual Field Restriction on Visual Exploration

Impact de la Restriction du Champ Visuel Sur l'Exploration Visuelle

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 45 (estimated)
• Sponsor: Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

To communicate with the observer and guide his gaze on the canvas, painters have developed different stylistic processes that artists, in the manner of scientists, have acquired on the functioning of human visual perception. This direct communication between the artist and the observer is strongly impacted for people with visual impairments. In order to improve the accessibility and autonomy of visually impaired people in museums and to allow each observer to feel the visual and emotional experience closest to the original work of the artist, it is essential to identify the modifications. perceptive generated by the constriction of vision

Detailed description

In this experiment, the investigators study the adaptive strategies developed by people with retinitis pigmentosa in the perception of figurative works of art. Peripheral vision is crucial for detecting objects and directing attention to the relevant areas of the environment, while central vision, of high spatial resolution, is especially essential for identifying the nature of objects. The integration of perceived information in peripheral vision and central vision makes it possible to quickly and effortlessly develop a spatial representation of the environment, to activate categorical knowledge on the observed scene and to relate the various objects perceived. However, with the progressive constriction of the visual field, the visual exploration of the subject RP can not be carried out with the strategies used by the healthy subjects, in which the targets of the saccades are in particular determined according to the information perceived in peripheral vision. Through the recording of eye movements, the investigators compare the differences in visual explorations of people with retinitis pigmentosa and healthy people with or without a simulated deficit.

Conditions

• Pigmentary Retinopathy

Interventions

Type	Name	Description
OTHER	Eye tracker	In visual search tasks, participants will sit in front of a screen and observe during each visual scene for a maximum of 45 seconds. Their eye movements will be recorded

Timeline

• Start date: 2019-11-04
• Primary completion: 2020-09-11
• Completion: 2021-10-17
• First posted: 2020-04-24
• Last updated: 2020-04-24

Locations

1 site across 1 country: France