To investigate the measurement condition in pupil diameter in healthy Japanese adult male subject

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1080224775

Enrollment

Registered

2019-07-10

Start date

2019-08-31

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 adult subject

Interventions

investigational material(s) Generic name etc : - INN of investigational material : - Therapeutic category code : --- Other Dosage and Administration for Investigational material : - control material(

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: -Healthy Japanese adult male subject between 20 and 50 years of age (inclusive) at time of informed consent. -Subject with naked eyes, subject with contact lenses, or subject with eyeglasses identified right and left diopters of eyeglasses.

Exclusion criteria

Exclusion criteria: -Subject has a presence of specific phobia (nyctophobia, claustrophobia etc.). -Subject has a history of an intraocular surgery [including LASIK (laser-assisted in-situ keratomileusis) eye surgery]. -Subject with a bifocal or over-corrected eyeglasses. -Subject's uncorrected or corrected visual acuity is less than 0.7 in both eyes, or less than 0.3 in each eye.

Design outcomes

Primary

Measure	Time frame
other -Difference in pupil diameter between each operator's 1st and 2nd main measurement within the same subject and the same luminance level -Difference in pupil diameter between luminance levels within the same subject and the same main measurement	—

Secondary

Measure	Time frame
other No secondary outcome.	—

Countries

Japan

Outcome results

None listed

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