Retinal and Choroidal Imaging for Alzheimer's Disease; Mild Cognitive Impairment; Parkinson's Disease; Multiple Sclerosis; Huntington Disease; Lewy Body Dementia; Frontotemporal Dementia; Amyotrophic Lateral Sclerosis (ALS); APOE-4 Positive; Traumatic Brain Injury; Concussion; PTSD; Down Syndrome; Neuro-Degenerative Disease; Normal Cognition

Based on the public registry summary, this study is trying to understand: This study aims to develop and evaluate biomarkers using non-invasive optical coherence tomography (OCT) and OCT angiography (OCTA) as well as ultra-widefield (UWF) fundus photography to assess the structure and function of the retinal and choroidal microvasculature and. The study team can confirm the exact objective and what it means for you.

This appears to be a device / app / digital / technology study involving Retinal and Choroidal Imaging. The phase is not clearly listed in the public registry. Phase is mostly relevant for medication studies and some device studies. For this study, it may be more useful to look at what is required, the duration, visits, and eligibility criteria.

This study may concern people with ptsd; age range: Over 18 Years. The criteria appear fairly specific, but you should not assume you are eligible. The study team must confirm diagnosis, age, exclusions, available locations, and next steps.

You may need to use a device, app, or digital tool for a defined period. The listed study locations suggest that at least part of participation may involve a physical site. Ask whether some steps can be done remotely.

If the study uses a device, app, or digital tool, check what data is collected, who can access it, how often you need to use it, and what happens if the tool detects a concerning signal. For any mental health study, also ask who to contact if you feel worse, whether participation may affect current treatment, whether you can stop, and who confirms eligibility.

The listed study locations suggest that at least part of participation may involve a physical site. Ask which sites are open, how many visits are expected, whether any steps can be done remotely, and whether travel costs or compensation are listed.

This study is sponsored by Duke University, which appears to be a university. If available, it can be useful to check the sponsor website, collaborators, investigator affiliation, and the official registry before deciding. HopeStage does not judge the quality of a sponsor or researcher, but helps you identify what to verify.

The registry indicates that this study is currently recruiting. This does not mean you are eligible: the study team must confirm the criteria, available locations, and next steps. The registry lists an estimated enrollment of 2,000 participants.