Improving the residual vision of proliferative diabetic retinopathy patients Eye Diseases
Conditions
Interventions
Participants were allocated into either the tDCS group or sham group using block randomization (online Study Randomizer Software (https://www.studyrandomizer.com)).
Participants in the
Sponsors
University of Graz
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Clinically diagnosed PDR patients 2. Voluntary participation and capacity to consent 3. Right-handedness (Edinburgh Handedness Test) 4. At least 18 years of age during the experiment
Exclusion criteria
Exclusion criteria: 1. Other co-morbid conditions such as chronic or residual neurological, psychological, and psychiatric disorders (esp. epilepsy, schizophrenia, mania or depression) 2. History of head injury with loss of consciousness 3. Intracerebral ischemia/history of cerebral bleeding 4. Metal implants in the head and neck area (e.g. post-operative clips) 5. Electronic implants (pacemakers, cochlear implant, deep brain stimulator) 6. Pregnancy or breastfeeding 7. Alcohol or drug addiction 8. Local or global aphasia 9. Any legal reason why the candidate cannot participate 10. Participation in another scientific or clinical study within the last 8 weeks
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual acuity is measured using the logarithm of the minimum angle of resolution (LogMAR) scores before and after stimulation | — |
Secondary
| Measure | Time frame |
|---|---|
| Number acuity measured before and after stimulation using a numerical discrimination task. (Patients were presented with an intermixed of 60 black and white dots. After the stimulus presentation time of 500ms, patients have to indicate whether there were more black or white dots by key presses) | — |
Countries
Philippines
Outcome results
None listed