Actively Recruiting
Retinal Neurovascular Coupling in Patients Previously Infected With COVID-19
Led by Medical University of Vienna · Updated on 2025-05-16
90
Participants Needed
1
Research Sites
231 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
The Study objective is to measure retinal neurovascular coupling and blood flow parameters in patients previously infected with COVID-19, long COVID-19 and healthy age- and sex- matched control subjects
CONDITIONS
Official Title
Retinal Neurovascular Coupling in Patients Previously Infected With COVID-19
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Men and women aged over 18 years
- Non-smokers
- For healthy subjects: no history of COVID-19 infection, negative SARS-CoV-2 nucleocapsid antibody and PCR tests, and normal eye exam with ametropy less than 6 diopters
- For subjects with history of COVID-19: positive PCR test within last 6 months, positive spike protein IgG antibody test, negative PCR test at study
- For subjects with long COVID-19: history of COVID-19 with positive seroprevalence, negative PCR test, and meeting WHO criteria for long COVID-19
You will not qualify if you...
- Symptoms of significant illness within 3 weeks before study day
- Severe medical conditions as judged by investigator
- Participation in another clinical trial within 3 weeks before study
- Blood donation within previous 3 weeks
- History or family history of epilepsy
- Abnormalities preventing reliable eye measurements
- Best corrected visual acuity less than 0.8 Snellen
- Pregnancy, planned pregnancy, or lactation
- Ametropy greater than 6 diopters (for COVID-19 and long COVID-19 groups)
- History of epilepsy
- Diabetes mellitus (for long COVID-19 group)
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Medical University of Vienna, Department of Clinical Pharmacology
Vienna, State of Vienna, Austria, 1090
Actively Recruiting
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
3
Not the Right Trial for You?
Explore thousands of other clinical trials that might be a better match.
Sign up to get personalized trial recommendations delivered to your inbox.
Already have an account? Log in here