Actively Recruiting
Axial Length Study of Children and Adolescents in Ten Provinces of China
Led by Shanghai Eye Disease Prevention and Treatment Center · Updated on 2025-12-18
30000
Participants Needed
2
Research Sites
N/A
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
Researchers are conducting a large observational study to establish the normal ranges of axial length in Chinese children and adolescents. The study includes 30,000 children aged 3 to 18 years and aims to gather important eye measurements to better understand eye development and myopia progression in this population. The study involves two groups: children with myopia and children without myopia. Participants are examined using cycloplegia to collect detailed ocular data. Each child will be followed for three years with annual visits to monitor changes in axial length and eye growth. During the study, children will undergo eye assessments annually to measure axial length and its elongation over time. Researchers will collect data on ocular parameters and monitor changes to better understand eye development in myopic and non-myopic children. Participation involves regular visits over three years, and data will help establish reference standards for eye length in young people.
CONDITIONS
Brief 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 to other places in 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 that prevent cooperation in eye assessments
- Ophthalmic diseases that prevent completing the eye examination
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Up to 3 years
Participants have their axial length measured to observe changes over time.
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
X
Xiangui He, PhD
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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