Prevalence of refractive-error and its associated factors

Prevalence of refractive-error and its associated factors among Japanese preschool children. - Prevalence of refractive-error and its associated factors

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000047189

Enrollment

400

Registered

2022-03-16

Start date

2021-06-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Myopia

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Subjects aged 4-6 years from a preschool

Exclusion criteria

Exclusion criteria: Children with chronic eye diseases, such as congenital cataracts, undergoing myopia-suppressing treatment, chronic medical disorders, and Down syndrome

Design outcomes

Primary

Measure	Time frame
Myopia	—

Secondary

Measure	Time frame
High myopia, Axial length, Spherical Equivalent	—

Countries

Japan

Contacts

Public ContactSaiko Matsumura

Toho University School of Medicine Department of Ophthalmology

saiko.matsumura@med.toho-u.ac.jp0337624151

Outcome results