Study on the effect of antihistamine eyedrops on pupil

Study on the effect of antihistamine eyedrops on pupil - the effect of antihistamine eyedrops on pupil

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000029106

Enrollment

100

Registered

2017-09-15

Start date

2017-10-01

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

Patients requiring fundus examination

Interventions

When the patient undergoes fundus examination, comparing the pupil diameter after instilling Tropicamide(45min) and the pupil diameter after further instilling antihistamine. The instillations is

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who required fundus examination when visiting outpatient

Exclusion criteria

Exclusion criteria: Exclude patients with pupillary disease

Design outcomes

Primary

Measure	Time frame
Comparing the pupil diameter after instilling Tropicamide(45min) and the pupil diameter after further instilling antihistamine	—

Countries

Japan

Contacts

Public ContactTatsui Sonoko

Kitasato univercity hospital Department of Ophthalmology

besobesonicopon55@gmail.com0427788111

Outcome results

None listed

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