Electrical stimulation for Restoration of Vision after stroke (REVIS) in the damaged visual field after stroke H53.4
Conditions
Interventions
Group 1: 1.rtACS * (active RTACs - sham tDCS , 30min daily, 10days ): The first treatment group receives the electrical stimulation at supra -orbital electrode placement and is treated with rtACS. The
Sponsors
Institut für Medizinische Psychologie
Eligibility
Sex/Gender
All
Age
18 Years to 75 Years
Inclusion criteria
Inclusion criteria: Prerequisite for participation in the study is a postchiasmatische lesion of the visual pathway with resultant unilateral visual field defect ( Quadrantenanopsie , hemianopia ) after ischemic or hemorrhagic stroke in persons aged 18 to 75 years. For all participants in the study, the postchiasmatische lesion must be at least 6 months old. The visual field defect must be in the comparison of screening and baseline survey to be stable for so that any possible visual field improvements can be clearly attributed to the stimulation and not to a spontaneous recovery of visual acuity or spontaneous fluctuations in performance. The study participants have residual visual performance and typically a gradual transition between the blind area ( visual field loss ) and the intact area of the visual field. The corrected visual acuity in each eye of the participant at least 0.4 ( logMAR ) or 20 /50 ( Snellen ).
Exclusion criteria
Exclusion criteria: Only subjects included in the study which do not fulfill any of the following exclusion criteria : active malignant tumors , diseases of the eyes or of the central nervous system that interfere with the study ( also includes uncontrolled glaucoma ) , electrical or electronic implants (eg pacemakers) ; metallic artifacts in the eye or the head ( with the exception of dental prostheses and shunts) ; expected low compliance ( for example, as a result of psychiatric or alcohol disorder or dementia syndrome); epilepsy disease within the last 10 years , intake of antiepileptic drugs or sedatives ; are pregnant or breastfeeding women.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| increase acuity in the visual field test (High Resolution Perimetry, HRP) to weeks after the beginning of treatment | — |
Secondary
| Measure | Time frame |
|---|---|
| reaction time HRP (High Risk Perimetrie) in ms, increase in mean threshold as parameter of coventionel perimetry, EEG-power spectrum (electroencephalogram-power spectrum), reading test (International reading Speed texts - IRest) | — |
Countries
Germany
Contacts
Public ContactCarolin Gall
Otto-von-Guericke-Universität MagdeburgInstitut für Medizinische Psychologie
Outcome results
None listed