Study of the lens adjustment force recovery of early presbyopic eyes by pirenoxine eye drops

Study of the lens adjustment force recovery of early presbyopic eyes by pirenoxine eye drops - The adjustment force recovery of presbyopia by pirenoxine eye drops

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019050

Enrollment

Registered

2015-09-17

Start date

2015-10-01

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

presbyopia

Interventions

Use Kary Uni eyedrops four times a day for 6 months Use Soft Santear eyedrops four times a day for 6 months

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: The inclusion criteria are male, patient age of 20 years and older, and no ophthalmic or systematic diseases other than refractive errors.

Exclusion criteria

Exclusion criteria: Ophthalmic or systematic diseases other than refractive errors, past ophthalmic operations, myopia of -6D or more, hyperopia.

Design outcomes

Primary

Measure	Time frame
Changes of accommodation amplitude (subjective&objective) after 6 month administration of eye drops.	—

Countries

Japan

Contacts

Public ContactKazuno Negishi

Keio University school of medicine Ophthalmology

fwic7788@mb.infoweb.ne.jp+81-3-3353-1211

Outcome results

None listed

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