A Study of Illuminance and Choroidal Structure

A Study of Illuminance and Choroidal Structure - A Study of Illuminance and Choroidal Structure

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000058422

Enrollment

Registered

2025-07-15

Start date

2025-07-15

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

Healthy individuals

Interventions

Use of optical coherence tomography and optical biometry

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Participants who received a written explanation of the study's purpose and procedures, provided written informed consent.

Exclusion criteria

Exclusion criteria: Cases with ocular fundus diseases. Cases in which image evaluation is not feasible due to poor image quality or artifacts.

Design outcomes

Primary

Measure	Time frame
To compare the ratio of choroidal vessels and interstitium under light and dark conditions.	—

Secondary

Measure	Time frame
To compare retinal and choroidal thicknesses under light and dark conditions. To investigate factors involved in refraction and axial length.	—

Countries

Japan

Contacts

Public ContactChisato Otaki

Shinseikai Toyama Hospital Eye Center

c-ootaki@shinseikai.or.jp0766-52-2156

Outcome results

None listed

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