China Axial Length Study
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age3-18
SponsorShanghai Eye Disease Prevention and Treatment Center
About this trial
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.
Eligibility criteria
Qualifiers
Aged 3 to 18 years
Have been 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, and children over 6 years old need oral consent to participate
Disqualifiers
Mental diseases, unable to cooperate to complete the eye assessment
Ophthalmic diseases, inability to cooperate to complete the inspection
Trial design
Treatments tested in this trial
- Not listed
Trial groups
30,000 Participants
are grouped into 2 trial groupsSponsors and collaborators
Shanghai Eye Disease Prevention and Treatment Center
Lead sponsor
Tongji Hospital
Collaborator
Sichuan Provincial People's Hospital
Collaborator
Shandong University of Traditional Chinese Medicine
Collaborator
People's Hospital of Ningxia Hui Autonomous Region
Collaborator
First Affiliated Hospital of Kunming Medical University
Collaborator
First Affiliated Hospital of Guangxi Medical University
Collaborator
Affiliated Hospital of Inner Mongolia Minzu University
Collaborator
Xinjiang Hospital of Traditional Chinese Medicine
Collaborator
Source ClinicalTrials.gov