A Project for the Determination of Average Biometric Values of Japanese Eyes.

A Project for the Determination of Average Biometric Values of Japanese Eyes. - Project Japan eye model.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000024220

Enrollment

250

Registered

2016-10-25

Start date

2017-01-01

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

Normal Subjects, Ametropia

Interventions

Tropicamido and phenylephrine.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Japanese with over 20 years old. Ametropia between -10D and +10D.

Exclusion criteria

Exclusion criteria: The ophthalmological and/or systemic disease without refractive error and cataract. Prior surgery. More than 5 months pregnant. Refraction lager than +/-10D.

Design outcomes

Primary

Measure	Time frame
Visual acuity,l Refractive errors, Ocular aberrations, Axial length, Anterior segment biometry, Corneal topography, and Age.	—

Countries

Japan

Contacts

Public ContactMasakazu Hirota

Osaka university graduate school of medicine Department of applied visual science

hirota.sensory@gmail.com0668793941

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026