Study on the visual fatigue and growth of children aged 4-7 years with a 4-stage liquid formula: a randomized controlled trial

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100053361

Enrollment

Unknown

Registered

2021-11-20

Start date

2022-04-01

Completion date

Unknown

Last updated

2022-09-26

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

Conditions

growth visual fatigue

Interventions

Experimental group:Nutrition fortified student liquid formula

control group:pure milk

Eligibility

Sex/Gender

All

Age

4 Years to 7 Years

Inclusion criteria

Inclusion criteria: 1. Aged 4 to 7 years; 2. No major congenital diseases (such as genetic diseases, congenital heart disease) and metabolic diseases; 3. No physical disability, and infectious diseases (big three yang, AIDS, etc.).

Exclusion criteria

Exclusion criteria: 1. Lactose intolerance; 2. Those who are allergic to milk protein; 3. Liver and kidney damage; 4. Those with milk intolerance discomfort for any reason; 5. Non-compliance with the study designer.

Design outcomes

Primary

Measure	Time frame
hight;weight;head circumference;visual accuracy;	—

Secondary

Measure	Time frame
bone density;body composition;non-cycloplegic refraction;Axial length;Corneal curvature;flicker fusion frequence;visuognosis persistence;	—

Countries

China

Contacts

Public ContactZhang Yumei

Peking University

zhangyumei@bjmu.edu.cn+86 13426134251

Outcome results

None listed

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