visual fatigue
Conditions
Interventions
Bilberry extract(8 days)-wash out(13 days)-Placebo(8 days)
Placebo(8 days)-wash out(13 days)-Bilberry extract(8 days)
Sponsors
Universal Clinical Systems Co., Ltd.
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1)Aged=>20 years,Male and female 2)Subjects who are aware of eyestrain. 3)Subjects who do not have the LASIK. 4)Subjects who do not use reading glasses.
Exclusion criteria
Exclusion criteria: 1)Subjects who have previous medical history of drug and/or food allergy. 2)Subjects who have previous medical history and/or current medical history of serious diseases (e.g., diabetes, digestive organ, liver, pancreas, heart and/or kidney). 3)Subjects who have been enrolled in the other clinical trials within about last 1 month. 4)Subjects who predicted gluttony and irregular eating habits by the pre-questionnaire and doctor's questions. 5)Subjects who constantly use supplements and/or functional foods affecting eyestrain. 6)Subjects who take medicines and plan to take new health foods. 7)Others who have been determined ineligible by principal investigator or sub-investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Near-reflex | — |
Secondary
| Measure | Time frame |
|---|---|
| questionnaires,plasma anthocyanin concentration | — |
Countries
Japan
Contacts
Public ContactMarie Kosehira
Omnica Co.,Ltd Research team
Outcome results
None listed