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China Axial Length Study

China Axial Length Study

Recruiting
3-18 years
All
Phase N/A
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  • Simplified (AI rewritten)

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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.

Eligibility

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

Study details
    Axial Length
    Myopia
    Child Development

NCT05770661

Shanghai Eye Disease Prevention and Treatment Center

1 February 2026

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