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Effect of test food intake on visual function.

A Randomized, Double-Blind, Parallel Group Study on the effect of test food intake on visual function. - RCT on the effect of nutritional component intake on visual function.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000053971
Enrollment
44
Registered
2024-03-27
Start date
2024-06-24
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 Subjects

Interventions

Intake of test food for 6 weeks Intake of placebo for 6 weeks

Sponsors

ROHTO Pharmaceutical Co., Ltd.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) Males and females aged 40-55 years. (2) Make self-judgment and are voluntarily giving written informed consent.

Exclusion criteria

Exclusion criteria: (1) Having serious ocular disease excluding refractive error. (2) Spherical equivalent : -6.0D or less (3) Cylinder is outside of +/- 1.50 D. (4) Having a history of refractive surgery. (5) Taking supplements* or medicines that contain vitamins or may affect eye function. *Health foods, dietary supplements, Food for Specified Health Uses (FOSHU) or Foods with Nutrient Function Claims (FNFC) (6) Smokers or have quit smoking within 3 months. (7) Allergic to the ingredients of test food. (8) Known or suspected to be pregnant. (9) Using medical products. (10) Having gastrointestinal disorders causing absorption deficiency. (11) Participation in any clinical trial in the past 3 months. (12) Judged as ineligible to participate by the physician.

Design outcomes

Primary

MeasureTime frame
Functional visual acuity

Secondary

MeasureTime frame
Contrast sensitivity OCT tests (fundus) The Quality of Vision (QoV) Questionnaire

Countries

Japan

Contacts

Public ContactMiwako Shidomi

ROHTO Pharmaceutical Co., Ltd. Health Science Business Planning Division

hsrpd@rohto.co.jp03-6832-6013

Outcome results

None listed

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