Actively Recruiting
China Axial Length Study
Led by Shanghai Eye Disease Prevention and Treatment Center · Updated on 2025-12-18
30000
Participants Needed
2
Research Sites
198 weeks
Total Duration
On this page
Sponsors
S
Shanghai Eye Disease Prevention and Treatment Center
Lead Sponsor
T
Tongji Hospital
Collaborating Sponsor
AI-Summary
What this Trial Is About
The primary objective of this multi-center, observational study is to establish the reference ranges of axial length in Chinese children and adolescents. 30,000 children aged 3-18 years were examined with cycloplegia to collect their ocular parameters and were all followed up for three years with annual visits.
CONDITIONS
Official Title
China Axial Length Study
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Aged 3 to 18 years
- Have lived in the research areas for at least one year and will not move for the following two years
- Parents or guardians sign an informed consent form
- Children over 6 years old provide oral consent to participate
You will not qualify if you...
- Mental diseases preventing cooperation during eye assessment
- Ophthalmic diseases preventing cooperation to complete the inspection
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 2 locations
1
Shanghai Eye Disease Prevention & Treatment Center
Shanghai, Shanghai Municipality, China, 200040
Actively Recruiting
2
Shanghai Eye Disease Prevention and Treatment Center
Shanghai, China
Actively Recruiting
Research Team
X
Xun Xu, MD
CONTACT
X
Xiangui He, PhD
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
2
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