No registrations found.
ID
Source
Brief title
Health condition
Cerebral visual impairment (CVI).
Other visual impairments.
Sponsors and support
Intervention
Outcome measures
Primary outcome
Reaction time to stimulus in the speed acuity test
Secondary outcome
Diagnostic feasibility of the speed acuity test
Background summary
At present, the definition of visual impairment is primarily based on distant visual acuity and visual field size. There are no nationally or internationally accepted tests to
measure reaction time in acuity testing. Nevertheless, many children and adults, both normally sighted as visually impaired, complain about problems in coping with various daily activities due to slow vision.
The main goal of this project is to develop and validate a practical method to quantify "slow vision"; the time the brain needs to process visual information. We have therefore developed a new tool, the speed acuity test, to measure “perception time” during the assessment of visual acuity in healthy normally sighted children (Barsingerhorn et al., 2018). The current study will continue with the validation of this test in children with visual impairments.
Study objective
The speed acuity test can detect slow vision and thereby aid in the diagnosis of visual impairments.
Study design
Data collection: 9 months. Data analysis: 3 months
Intervention
Participation in speed acuity test: participants have to press a button when a visual stimulus is presented on a computer screen.
Nouk Tanke
024-3668579
nouk.tanke@radboudumc.nl
Nouk Tanke
024-3668579
nouk.tanke@radboudumc.nl
Inclusion criteria
Children aged 4 to 17 years, diagnosed with cerebral visual impairments (CVI) or other visual impairments, visiting Koninklijke Visio for regular rehabilitation, treatment, diagnosis or checkups.
Exclusion criteria
Retinal pathology leading to a central scotoma, or diagnosis of additional mental impairments.
Severe mental retardation and/or motor problems leading to problems to understand or execute the test used in the study.
Design
Recruitment
IPD sharing statement
Plan description
with automatically generated back-ups. The additional parameters and outcome parameters of the test and the location of the raw data will be stored within the validated data management system Castor EDC. It is necessary to be able to trace data back to an individual subject, therefore a subject identification code is used to link the data to the subject. The key to the code is safeguarded by the investigator and being stored at another location than the data. Data are handled confidentially by the principal
investigator. After the end of the study all essential documents pertaining to the conduct of the study, including screening forms, patient files, originals of test result reports,
correspondence, records of informed consent etc., will be archived by the investigator for a period of 15 years in accordance with the standard operating procedure of the
Radboudumc.
Anonymized data will be published in a scientific journal.
Followed up by the following (possibly more current) registration
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| NTR-new | NL8723 |
| CCMO | NL48708.091.14 |
| OMON | NL-OMON47506 |