Axial Length, Child Development, Myopia
Conditions
Brief summary
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.
Interventions
None listed
Sponsors
Shanghai Eye Disease Prevention and Treatment Center
Tongji Hospital
Sichuan Provincial People's Hospital
Shandong University of Traditional Chinese Medicine
People's Hospital of Ningxia Hui Autonomous Region
First Affiliated Hospital of Kunming Medical University
First Affiliated Hospital of Guangxi Medical University
Affiliated Hospital of Inner Mongolia Minzu University
Xinjiang Hospital of Traditional Chinese Medicine
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
3 Years to 18 Years
Healthy volunteers
Yes
Inclusion criteria
* 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
Exclusion criteria
* Mental diseases, unable to cooperate to complete the eye assessment * Ophthalmic diseases, inability to cooperate to complete the inspection
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Axial length | 2023-2026 | Axial length in millimeter was examined by IOL Master |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Axial length elongation | 2023-2026 | The elongation in millimeter was the difference between two annual visits. |
Countries
China
Contacts
CONTACTXun Xu, MD
CONTACTXiangui He, PhD
Outcome results
None listed