China Axial Length Study

Shanghai Eye Disease Prevention and Treatment Center30,000 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

30,000

Conditions

Axial Length Myopia Child Development

Eligibility

Sex: ALLMin age: 3 YearsMax age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Locations (2)

Shanghai Eye Disease Prevention & Treatment Center

Shanghai, Shanghai Municipality, China

RECRUITING

Shanghai Eye Disease Prevention and Treatment Center

Shanghai, China

RECRUITING

Outcomes

Primary Outcomes

Axial length

Axial length in millimeter was examined by IOL Master

Time frame: 2023-2026

Secondary Outcomes

Axial length elongation

The elongation in millimeter was the difference between two annual visits.

Time frame: 2023-2026

Central Contacts

Xun Xu, MD

CONTACT

021-53555032 drxuxun@sjtu.edu.cn

Xiangui He, PhD

CONTACT

15000755422 xianhezi@163.com

Data from ClinicalTrials.gov

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