Perception of Objects and Natural Scenes in People With Vision Loss (ACTIVIS) (ACTIVIS)
8. august 2016 oppdatert av: Lille Catholic University
Evaluation of the Perception of Objects and Natural Scenes in People With Vision Loss (Loss of Central or Peripheral Vision)
The loss of central vision causes difficulty not only in reading but also in faces recognition, and in particular in the identification of facial expression, objects or spaces.
These visual deficits have been mainly studied in relation with reading, which is the main complaint of these kind of patients.
However, there are not enough data regarding perception of objects and spaces in this population.
Then, the objectives are to study the visual-spatial abilities in individuals with vision loss, and altered cognitive processes, (2) to develop clinics tools for early detection and quantification of visual-spatial deficits and (3)to understand the capacities of normal peripheral vision in order to test the possibility of potential training for use of peripheral vision when central vision is impaired by an ophthalmic pathology.
Studieoversikt
Studietype
Observasjonsmessig
Registrering (Faktiske)
260
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år til 90 år (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Prøvetakingsmetode
Ikke-sannsynlighetsprøve
Studiepopulasjon
Patients with eye disease causing loss of central or peripheral vision
Beskrivelse
Inclusion Criteria cases:
- Patients with eye disease causing loss of central or peripheral vision
- French speakers
- Age between 18 and 90 years old
- Written consent
- Health insurance
Inclusion Criteria controls:
- Sex and age matched controls (+/- 5 years)
- French speakers
- Normal visual examination with visual acuity of min 9/10
Exclusion Criteria:
- Psychiatric disease or neurological pathologies
- Communication difficulties (deafness / mutism)
- Drug treatment altering concentration
- Mental deterioration with MMS <24
- Alcoholism or addiction to drugs
- Persons under guardianship
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Observasjonsmodeller: Case-Control
- Tidsperspektiver: Tverrsnitt
Kohorter og intervensjoner
Gruppe / Kohort |
Intervensjon / Behandling |
|---|---|
|
Patients with loss of central vision
Patients coming in ophthalmic consultation will be selected for the study.
The diagnosis of this disease is based on clinical examination, and imaging of the retina.Patients with only loss of central vision will be selected.
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Patients with loss of peripheral vision
Patients coming in ophthalmic consultation will be selected for the study.
Patients with loss of peripheral vision will be selected on the bases of presence of tunnel vision.
|
|
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Control group
Patients without loss of vision.
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Comparison of performances in visual tests between different groups according to error rate
Tidsramme: at inclusion
|
These behavioral studies include a series of short tests of 5 to 10 minutes each (not exceeding 60 minutes with breaks and instructions) in which photos of scenes or isolated objects will be presented in central or peripheral vision using a computer screen or a panoramic screen covering a 180° field.
|
at inclusion
|
|
Comparison of performances in visual tests between different groups according to answer time
Tidsramme: at inclusion
|
These behavioral studies include a series of short tests of 5 to 10 minutes each (not exceeding 60 minutes with breaks and instructions) in which photos of scenes or isolated objects will be presented in central or peripheral vision using a computer screen or a panoramic screen covering a 180° field.
|
at inclusion
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Estimation of the score of visual acuity by the logMAR chart
Tidsramme: at inclusion
|
at inclusion
|
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Measure of lesion size
Tidsramme: at inclusion
|
at inclusion
|
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Pearson correlation coefficient to determine the correlation between the performance parameters during visual tests (error rate and answer time) and clinical parameters (visual acuity and lesion size)
Tidsramme: at inclusion
|
These behavioral studies include a series of short tests of 5 to 10 minutes each (not exceeding 60 minutes with breaks and instructions) in which photos of scenes or isolated objects will be presented in central or peripheral vision using a computer screen or a panoramic screen covering a 180° field.
|
at inclusion
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Samarbeidspartnere
Etterforskere
- Hovedetterforsker: Thi Ha Chau Tran, MD, Hospital of the Lille Catholic Institute
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. mars 2011
Primær fullføring (Faktiske)
1. mars 2015
Studiet fullført (Faktiske)
1. mars 2015
Datoer for studieregistrering
Først innsendt
2. august 2016
Først innsendt som oppfylte QC-kriteriene
8. august 2016
Først lagt ut (Anslag)
11. august 2016
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
11. august 2016
Siste oppdatering sendt inn som oppfylte QC-kriteriene
8. august 2016
Sist bekreftet
1. august 2016
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- RC-P009
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
Nei
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