Actively Recruiting
Progression Patterns of Choroidal Venous Alterations
Led by Singapore National Eye Centre · Updated on 2025-11-28
250
Participants Needed
4
Research Sites
230 weeks
Total Duration
On this page
Sponsors
S
Singapore National Eye Centre
Lead Sponsor
N
National University Hospital, Singapore
Collaborating Sponsor
AI-Summary
What this Trial Is About
This study is about understanding how a condition called pachychoroid changes over time. Pachychoroid refers to an anatomic choroidal characteristic with abnormally thick choroid or abnormally dilated Haller's vessels. Pachychoroid can range from mild forms which does not cause any problems to more serious ones that might cause vision loss.This study will recruit participants with pachychoroid, to learn more about how this condition develops, how it affects people in the long run, and what factors might make it worse.
CONDITIONS
Official Title
Progression Patterns of Choroidal Venous Alterations
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Adults aged 45 years or older
- Presence of pachyvessels on ultra-widefield imaging in at least one quadrant
- Willing to undergo pupil dilation and protocol-required procedures for both eyes
- Willing to provide written informed consent
You will not qualify if you...
- Presence of eye media disorders that interfere with vision and eye assessments during the study
- Eyes with other eye diseases such as trauma, inflammation, or previous intraocular surgery except cataract surgery
- Systemic diseases affecting eye blood flow such as uncontrolled hypertension, autoimmune disease, or blood disorders
- Pregnant or nursing women
- Persons unable to give informed consent
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 4 locations
1
Hong Kong University
Hong Kong, Hong Kong
Not Yet Recruiting
2
University of Malaya Medical Centre
Kuala Lumpur, Malaysia
Actively Recruiting
3
National University Hospital, Singapore
Singapore, Singapore
Not Yet Recruiting
4
Singapore National Eye Centre/ Singapore Eye Research Institute
Singapore, Singapore
Actively Recruiting
Research Team
G
Gemmy Cheung
CONTACT
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
0
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