evaluation of epinastine hydrochloride ophthalmic solution in allergic conjunctivitis by conjunctival white birch pollen allergen challenge - double masked, comparison study-

evaluation of epinastine hydrochloride ophthalmic solution in allergic conjunctivitis by conjunctival white birch pollen allergen challenge - double masked, comparison study- - evaluation of epinastine hydrochloride ophthalmic solution in allergic conjunctivitis by conjunctival white birch pollen allergen challenge - double masked, comparison study-

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000015797

Enrollment

Registered

2014-12-01

Start date

2014-12-01

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

allergic conjunctivitis

Interventions

At visit4 and 5, conjunctival challenge is performed with white birch pollen antigen after drop instillation of epinastine hydrochloride ophthalmic solution in asymptomatic allergic conjunctivitis pa

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Has a positive result from an allergen-specific IgE antibody test of white birch pollen.

Exclusion criteria

Exclusion criteria: Females who are pregnant, nursing or planning a pregnancy, or females of childbearing potential who are not using a reliable method of contraception. Presence of any abnormality or significant illness that could be expected to interfere with the study.

Design outcomes

Primary

Measure	Time frame
itching score at 4 hours after drop instillation of action	—

Countries

Japan

Contacts

Public ContactKenichi Namba

Hokkaido University Hospital ophthalmology

knamba@med.hokudai.ac.jp011-706-5944

Outcome results

None listed

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