Research on the Effectiveness of Negative Ions Combined with Continuous Spectrum Light Sources in Preventing Myopia in Children.

Status

Recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2500100226

Enrollment

Unknown

Registered

2025-04-07

Start date

2024-10-08

Completion date

Unknown

Last updated

2025-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myopia

Interventions

Intervention group:The children's residences, and desk lamps of the intervention group used negative ions combined with LED light sources with continuous spectrum in the 430-780nm band.

Control group:Desk lamps use conventional lighting, lighting.

Eligibility

Sex/Gender

All

Age

6 Years to 9 Years

Inclusion criteria

Inclusion criteria: Students selected for 4 classes in the first grade of primary school; voluntarily participate in this study, with the consent of their guardians and signed by their guardians.

Exclusion criteria

Exclusion criteria: Do not agree to participate in ophthalmic examinations such as mydriasis; intraocular surgery or organic lesions of eye tissue.

Design outcomes

Primary

Measure	Time frame
Axial length;	—

Secondary

Measure	Time frame
equivalent spherical degree;	—

Countries

China

Contacts

Public ContactHuayi Lyu

The First Affiliated Hospital of USTC (Anhui Provincial Hospital)

lhy510@ustc.edu.cn+86 138 9489 6620

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026