The Effects of Blackcurrant Supplementation on Eye Health

Franklin Health Research

Status: Completed

Conditions: Eye Strain; Eye Fatigue

Treatments: Dietary Supplement: Blackcurrant; Other: Placebo

Study type: Interventional

Funder types: Other

Identifiers

NCT04775654

21-02-7800

Details and patient eligibility

About

The purpose of this study is to evaluate the potential for supplementation with black currant to support eye health among otherwise healthy adult women who spend 6+ hours per day using digital screens.

Full description

Women who are informed about the study and provide informed consent will be randomized to one of two groups: supplement and placebo. Group assignment will be a 1:1 ratio to supplement (455mg of blackcurrant standardized to 50mg anthocyanins in 2 capsules/day) or placebo (2 capsules/day). Outcomes will be assessed at baseline and again on day 70.

Enrollment: 57 patients

Sex: Female

Ages: 30 to 60 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Female
• Age 30-60
• Lives in the United States
• Employed full time in an online work environment OR enrolled full time in an online learning environment (average of 6+ hours per day)
• Ability to understand study instructions
• Ability to provide informed consent
• Residence within 100 miles of the study center

Exclusion criteria

• Low blood pressure
• Uncontrolled hypertension (i.e. systolic/diastolic blood pressure > 140/90)
• Uncontrolled diabetes (i.e. fasting blood glucose >180mg/dl)
• Any blood clotting disorder
• Ocular disease
• Best corrected visual acuity <20/30
• Cataracts
• Renal disease
• Active hepatitis or cirrhosis
• Acute or chronic infectious disease
• Pregnant
• Breastfeeding
• Currently trying to conceive
• Surgical or other invasive procedure planned within the intervention period

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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57 participants in 2 patient groups, including a placebo group

Supplement

Experimental group

Description:

Participants consume 455mg of blackcurrant extract standardized to contain 50mg anthocyanins in a 2-capsule dose for 70 days.

Treatment:

Dietary Supplement: Blackcurrant

Placebo

Placebo Comparator group

Description:

Participants consume 2 capsules of microcrystalline cellulose for 70 days.

Treatment:

Other: Placebo