Central or Peripheral Visual Impairment
Conditions
Brief summary
The objective of this pilot work is to determine the role of central and peripheral visions in explicit attention processes (saccade planning) in the case of visual impairment.
Interventions
PROCEDUREmicroperimetry
define the retinal fixation point and the differential sensitivity threshold of the retina.
PROCEDUREvisual acuity
using ETDRS scales
PROCEDUREautomated visual field
recording visual attention based on central or peripheral visual information
PROCEDUREeye movements recording
recording of explicit visual attention based on central or peripheral visual information
Sponsors
Nantes University Hospital
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Male or female ≥18 years; * Patient with a central visual deficit (central scotoma on the visual field: DMLA, cones dystrophy ...) or peripheral (annular scotoma: chronic glaucoma, retinitis pigmentosa ...) or without visual deficit (corrected visual acuity and visual field) * Patient agreeing to participate in the study and signing informed consent * Patient affiliated to social security
Exclusion criteria
* Pregnant woman * Patient with known epilepsy * Major under judicial safeguard, or deprived of liberty * Major under guardianship or curatorship or admitted to a health or social institution for purposes other than research.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| recording of eye movements (central versus peripheral) | Day 0 |
| Measurement of visual acuity (central versus peripheral) | Day 0 |
| Microperimetry recording (central versus peripheral) | Day 0 |
| recording of automated visual field (central versus peripheral) | Day 0 |
Secondary
| Measure | Time frame |
|---|---|
| Measurement of visual acuity (patient versus control) | Day 0 |
| Microperimetry recording (patient versus control) | Day 0 |
| recording of automated visual field (patient versus control) | Day 0 |
| recording of eye movements (patient versus control) | Day 0 |
Countries
France
Outcome results
None listed