Healthy people
Conditions
Interventions
Lutein,Zeaxanthin supplements 2 capsule/day
Placebo supplements 2 capsule/day
Sponsors
Laboratory of Systematic Forest and Forest Products Science, Faculty of Agriculture, Kyushu University
Fuculuty of Humanity-Oriented Science and Eingineering, Kindai University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: (1) persons who will generally be judged as healthy (2) Persons who will give written informed consent by theirselves
Exclusion criteria
Exclusion criteria: (1) persons who have any dietary supplements, quasi drugs or medicines which cause same or similar efficay with the effect evaluated in this study (2) persons who changed their habitats of supplements whitin 4 weeks. (3) Persons who work in night shift or in day and night shift (4) persons who have been treated their illness or prevention in a clinic at their informed consent (5) persons with their medical histories as follows: serious diseases of Sugar metabolism,lipid metabolism, liver function, renal function, heart, circulatory, respiratory, endocrine system, immune system, or mental illness of the nervous system (6) persons with the medical histories of alcoholism or drug dependence (7) persons who might be developed allergic reaction to foods. (8) Persons who are pregnant, breast-feeding, or hope to be pregnant during the study preiod (9) persons who had always participated in or will participate in any other clinical trial (to use foods/medicine/quasi medicine/medical device) (10) persons who will not be judged suitable to the participants by the investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| contrast sensitivity Accommodation ability | — |
Secondary
| Measure | Time frame |
|---|---|
| Visual Analog Scale | — |
Countries
Japan
Contacts
Public ContactKuniyoshi Shimizu
Faculty of Agriculture, Kyushu University Laboratory of Systematic Forest and Forest Products Science
Outcome results
None listed