Safety and efficacy of eye care supplement intake

Safety and efficacy of eye care supplement intake - The effect of supplement on eye functions.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000024412

Enrollment

Registered

2016-10-14

Start date

2016-10-24

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 adults

Interventions

Intake of supplement containing Bilberry extract powder, 2 capsules per day, 6weeks Intake of supplement without Bilberry extract powder, 2 capsules per day, 6weeks

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Japanese male and female aged 20 to 45 (at first observation including screening) 2) A person with symptoms of eyestrain on a daily basis 3) A person who is engaged in VDT work (PC or detailed work) on a daily basis (6H/day or more on average) 4) A person with symptoms of dry eye

Exclusion criteria

Exclusion criteria: 1) A person who was not diagnosed with organic eye disease in clinical observations 2) A person who is not so extremely difficult to adjust eyesight with autorefractometer 3) A person who can adjust eyesight as 20/15(1.5) vision (both eyes) 4) A person who is relatively little tear secretion on Schirmer test 5) A person who is relatively short on tear breakup time

Design outcomes

Primary

Measure	Time frame
Ocular accommodation function test on pre and post of the study.	—

Secondary

Measure	Time frame
Kinetic vision test Continuous accommodation near point test 3m visual acuity test Schirmer test Tear film breakup time(BUT) test	—

Countries

Japan

Contacts

Public ContactKo MASUDA

SOUKEN Co., Ltd Management Division

k_masuda@mail.souken-r.com03-5408-1555

Outcome results

None listed

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