Eye and Carotenoid Augmentation Research and Evaluation (EyeCARE) (EyeCARE)

February 24, 2025 updated by: University of Illinois at Urbana-Champaign
The primary study outcomes are to investigate the effects of 4-month daily carotenoid complex supplementation on carotenoid status in the macula and skin and visual fatigue among adults 20-45 years of age. Secondary outcomes will examine the supplementation effects on cognitive function.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Lutein and zeaxanthin are carotenoids or plant-based pigments that accumulate in various human tissues including the eye, skin, adipose/fat, and the brain where they play important roles as antioxidants and light filters. Previous correlational work has shown that lutein and zeaxanthin intake is associated with multiple markers of health including visual and cognitive outcomes. However, experimental or intervention research examining the effects of lutein and zeaxanthin supplementation on the accumulation of these carotenoids in the eye and skin and implications for visual and cognitive function is still emerging. Additionally, virtually all the previous research has relied on single nutrient supplementation (e.g., only lutein or zeaxanthin) resulting in limited knowledge of the benefits of providing these carotenoids with other possibly healthful nutrients (e.g., astaxanthin, vitamin E). Accordingly, this project will test the effects of lutein and zeaxanthin supplementation provided in a complex with other antioxidants and nutrients on outcomes of nutritional status in the eye and skin as well as visual and cognitive health. The study aims will be addressed using a double-blind randomized controlled trial design. Adults 20-45 years of age will be asked to participate in a daily 4-month double-blind randomized controlled clinical trial. Treatment group (N=20) participants will be asked to consume 2 daily softgels with a daily total containing 20mg free lutein (10mg/softgel), 4 mg free zeaxanthin (2mg/softgel), 40mg maqui berry extract (20mg/softgel), 6 mg astaxanthin (3 mg/softgel), 80mg bilberry extract (40mg/softgel), flaxseed oil (150mg/softgel), and vitamin E (5IU/softgel). Participants will be asked to consume the supplements with a meal of their choosing. Control group participants will be asked to consume similar-looking placebo softgels over the same period.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Urbana, Illinois, United States, 61801
        • University of Illinois

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. not pregnant
  2. not breastfeeding
  3. absence of hypertension
  4. absence of diabetes
  5. absence of cerebrovascular disease
  6. absence of cardiovascular disease
  7. absence of liver disease
  8. absence of kidney disease
  9. absence of gastrointestinal disease
  10. absence of age-related macular degeneration
  11. no allergy to carotenoids
  12. 20/20 or corrected vision
  13. MPOD less than or equal to 0.60
  14. Age between 20-45 years

Exclusion Criteria:

  1. pregnant
  2. breastfeeding
  3. presence of hypertension
  4. presence of diabetes
  5. presence of cerebrovascular disease
  6. presence of cardiovascular disease
  7. presence of liver disease
  8. presence of kidney disease
  9. presence of gastrointestinal disease
  10. presence of age-related macular degeneration
  11. allergy to carotenoids
  12. not 20/20 or uncorrected vision
  13. MPOD greater than 0.60
  14. Younger than 20 years or older than 45 years

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Carotenoid Complex Supplement
20mg free lutein (10mg/softgel), 4 mg free zeaxanthin (2mg/softgel), 40mg maqui berry extract (20mg/softgel), 6 mg astaxanthin (3 mg/softgel), 80mg bilberry extract (40mg/softgel), flaxseed oil (150mg/softgel), and vitamin E (5IU/softgel)
Dietary supplement: Carotenoid Group
Treatment will contain 20mg free lutein (10mg/softgel), 4 mg free zeaxanthin (2mg/softgel), 40mg maqui berry extract (20mg/softgel), 6 mg astaxanthin (3 mg/softgel), 80mg bilberry extract (40mg/softgel), flaxseed oil (150mg/softgel), and vitamin E (5IU/softgel)
Placebo Comparator: Control
flaxseed oil (330mg)
Dietary supplement: Control (placebo) group
Flaxseed Oil (330mg)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Macular Pigment Optical Density
Time Frame: From enrollment to end of treatment at 4 months
Macular carotenoids assessed using heterochromatic flicker photometry
From enrollment to end of treatment at 4 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Skin carotenoids
Time Frame: From enrollment to end of treatment at 4 months
Carotenoids in skin assessed using skin reflection spectroscopy
From enrollment to end of treatment at 4 months
Visual Fatigue
Time Frame: From enrollment to end of treatment at 4 months
Visual fatigue as assessed by the Computer Vision Syndrome Questionnaire
From enrollment to end of treatment at 4 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Illinois at Urbana-Champaign

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Daiken Biomedical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 15, 2024

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 14, 2025

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 14, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 24, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 24, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 25, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 24, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IRB23-0196

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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