An observational study in Children Suffering From Cortical Visual Impairment, sponsored by Université Catholique de Louvain. Recruiting at 1 site in Belgium. Open to participants aged 3 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-05-30.
Sponsored by Université Catholique de Louvain · Observational
Some children present visual difficulties linked not to damage to the eye, but to damage to the brain. This type of dysfunction of the visual cerebral pathways leads, for example, to difficulties in recognition, visuomotor coordination or visuo-spatial disorders. These highly specific disorders are known as "cortical visual impairment" (CVI). Despite their real impact on children's development, these disorders are still poorly diagnosed in the French-speaking world. As a result, follow-up and care for these children are poorly adapted. A better understanding of neurovisual disorders and the availability of validated tools in French are therefore essential. Indeed, it is currently considered that 3 to 4% of children aged four to six, i.e. around one child per kindergarten class, have a CVI following a neuro-logical lesion acquired in the perinatal period.
Because of the lack of a valid tool in French, the aim of the present study is to provide the results of a validation study of a parental questionnaire for screening children with warning signs of CVI in French. This questionnaire will be offered online using the Qualtrics tool. In order to evaluate the relevance of this questionnaire, it will be proposed, on the one hand, to parents whose child (aged 3 to 12) does not present any particular developmental difficulties, and on the other hand, to parents whose child (aged 3 to 12) seems to present signs of neurovisual disorders. By comparing their answers, the investigators hope that certain questions will reveal elements typical of neurovisual disorders/CVI, thus demonstrating the relevance of this questionnaire in facilitating diagnosis.
360 studies on the registry are indexed under Vision Disorders; 84 are open to participants now.
This study's planned enrollment of 250 is above the median of 126 across 97 observational studies indexed under Vision Disorders.
Browse Vision Disorders studies →Université Catholique de Louvain is the lead sponsor of 154 studies on the registry; 59 are open to participants now.
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In order to evaluate the relevance of this questionnaire, it will be proposed to parents whose children (aged 3 to 12) do not present any particular developmental difficulties, and to parents whose children (aged 3 to 12) appear to present signs of neurovisual disorders.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Control group:
Clinical group
Exclusion Criteria:
Each parent has to complete a online questionnaire
Diagnostic Test: Questionnaire
The parents have to complete a questionnaire
typical behaviors of CVI
The scores obtained represent a difficulty, an absence of mastery of a skill. Thus, a high score means that the child has some visual difficulties, while a low score means that the child has no difficulties.
Time frame: Through study completion, an average of 14 months
Plan to share: No
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