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A trial for improving oxidative stress in tear fluid A randomized double-blind placebo-controlled parallel-group study

A trial for improving oxidative stress in tear fluid A randomized double-blind placebo-controlled parallel-group study - A trial for improving oxidative stress in tear fluid

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000014590
Enrollment
30
Registered
2014-07-18
Start date
2014-07-17
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

Duration: 8 weeks Test material: lutein One capsule two times per day before breakfast and dinner Duration: 8 weeks Test material: placebo One capsule two times per day before breakfast and dinn

Sponsors

ORTHOMEDICO Inc.
Lead Sponsor
Seishin-kai Medical Association Inc, Takara Medical Clinic.
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: a) Persons who are between 30 and 49 years old b) Persons who are aware of dry eyes c) Persons who routinely use a TV game and PC or act the VDT more than 4 hour per day d) Persons who routinely don`t use a glass or screen of blocking blue-light e) Persons whose corrected visual acuity in both eyes is more than 1.0 and who don`t use contact lenses

Exclusion criteria

Exclusion criteria: a)Persons who have previous medical history of malignant tumor or heart failure or myocardial infarction b)Patients being treated for at least one of following diseases atrial fibrillation, cardiac arrhythmia, hepatic disorder, renal disorder,cerebrovascular disorder, rheumatism,diabetes mellitus, dyslipidemia,hypertension and other chronic disease c)Persons who have ophthalmopathy or entropion or trichiasis d)Persons who have ametropia and don`t be treated orthoptics properly e)Persons who are strong astigmatism f)Persons who are achromatopsia g)Persons who were treated with LASIK h)Persons who have cause of eyestrain except for neurological deficit,et al. or regulatory function i)Persons who take medicines, herbal medicines j)Persons who are allergic to medicines, or products related to the test material of this trial k)Pregnant women, lactating women, or women who want to get pregnant during the trial period l)Persons who have been enrolled in the other clinical trials within last 3 months before the agreement for the participation to this trial m)Persons who are judged not suitable to participate in this trial by physician

Design outcomes

Primary

MeasureTime frame
Degree of oxidative stress Pigment amount of macula lutea Dry eye evaluation

Secondary

MeasureTime frame
Questionnaires Likert scale Safety test Physical examination Urine analysis Blood chemical analysis Visual acuity test

Countries

Japan

Contacts

Public ContactNaoko SUZUKI

ORTHOMEDICO, Inc. R&D Department

nao@orthomedico.jp03-3818-0610

Outcome results

None listed

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