NCT05539508Not yet recruiting
Role of Peripheral Vision in Scene Perception (PERISCE)
Role of Peripheral Vision in Scene Perception
Source: ClinicalTrials.gov · Last updated 14 Sept 2022 · Not updated for over 12 months - ask the site whether it is still open
Brief summary (registry, in English)
Despite its low spatial resolution, peripheral vision is very useful for rapidly categorizing a visual scene. Low spatial frequencies of a visual stimulus available in peripheral vision would allow a coarse categorization of the scene and objects (deciding, for example, whether it is an urban or natural landscape). This first representation would then trigger predictive mechanisms which would subsequently guide a more detailed visual analysis in central vision. The psychophysical studies that the investigators have already conducted in this scientific context has been carried out under normal vision conditions. The objective of this project is to study the influence of peripheral vision on central vision with an original approach: What are the consequences of a loss of peripheral vision on the processing performed in central vision? The project will concern patients with glaucoma. This ophthalmic pathology particularly affects the peripheral retina and thus represents a good pathological cognitive model of a visual recognition system in which peripheral vision is less important. The investigators will conduct psychophysical studies with glaucomatous patients and healthy volunteers with normal vision. All participants will be required to perform a short experiment on a computer (15 minutes) where they will look at different photographs of scenes of different luminance and spatial frequencies. Participants will have to perform various tasks on these images using the keys on the keyboard.
- Status (registry)
- Not yet recruiting
- Study type
- Observational
- Enrollment
- 120 (estimated)
- First submitted
- 23 Aug 2022
- Start date
- 1 Oct 2022
- Primary completion date
- 1 Jul 2026
- Lead sponsor
- University Hospital, Grenoble
- Diseases
- Glaucoma
- NCT number
- NCT05539508
What you commit to
- Study type: Observational
- Planned participants: 120
- From 1 Oct 2022 to the primary completion date, 1 Jul 2026
- No sites listed in no country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- treated with medication that might compromise sustained attention (benzodiazepine, narcoleptics)
Age
- ophthalmologic disease other than Glaucoma (age-related macular degeneration, cataract except for uncomplicated cataract surgery, amblyopia, optic neuropathy, diabetic retinopathy …)
Who the study is looking for
- For patients :
- between 18 and 80 years old
- stable bilateral primary open angle glaucoma (POAG)
- visual acuity \> 5/10 for distant vision for the eye tested
- peripheral visual field defect on the eye tested measured through a Humphrey Visual Field Analyzer
- For healthy volunteers :
- between 18 and 80 years old
- visual acuity \> 5/10
- absence of ophthalmologic disease other than Glaucoma (age-related macular degeneration, cataract except for uncomplicated cataract surgery, amblyopia, optic neuropathy, diabetic retinopathy …)
Age in the registry: 18 years to 80 years · Sex: All · Accepts healthy volunteers
This page is information, not medical advice. Discuss any trial with your doctor.