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Age-Related Eye Disease Study (AREDS) Follow-Up

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT00594672
Recruitment Status : Active, not recruiting
First Posted : January 16, 2008
Last Update Posted : May 25, 2023
Sponsor:
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Eye Institute (NEI) )

Study Description
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Brief Summary:

This study is a 5-year extension of the AREDS protocol, in which investigators followed the natural course of age-related macular degeneration (AMD) and cataracts. Participants in the former AREDS protocol are eligible for this study.

Participants have a complete eye examination once a year and are contacted at least once a year between visits to check on their status. The eye examination includes measurement of visual acuity (vision chart test) and examination of the inside of the eye after the pupils have been dilated with eye drops. Photographs of the inside of the eye may be taken using a special camera that flashes a bright light in the eye. A blood sample may be obtained to test for cholesterol level and genes related to inflammation.


Condition or disease
Age-Related Macular Degeneration Cataract

Detailed Description:

The Age-Related Eye Disease Study (AREDS) Follow-Up protocol allows us to continue with the follow-up of participants who were enrolled in the clinical trial of antioxidant vitamins and zinc. The AREDS study was designed in the beginning to determine the clinical course and prognosis of age-related macular degeneration (AMD) and cataracts.1 In addition, AREDS evaluated the possible risk factors associated with the development of AMD and cataracts; the nutritional risk factors were evaluated and published in October 2001.

Study results showed that antioxidant vitamins and zinc therapy reduced the risk of developing advanced AMD in participants with intermediate and greater risk of developing AMD (categories 3 and 4) by 25%. The risk of vision loss of three lines or more on the logarithmic visual acuity charts was also reduced by 19% for these participants. For those who developed AMD, their risk of vision loss was reduced by 25%. Antioxidants and zinc are now recommended for participants who have an intermediate risk of developing advanced AMD.

Upon completion of the AREDS clinical trial in September 2001, participants were invited for follow-up for an additional five years to collect further data on the natural course of both AMD and cataracts. Although the multi-center trial was complete in December 2005, we wish to continue to follow-up on these participants at the NEI on an annual basis for a minimum of five years from the date of enrollment in this study to collect additional data.

Although results from AREDS on the relationship of lutein/zeaxanthin and omega-3 long-chain polyunsaturated fatty acid (LCPUFA) intake with advanced AMD were informative, the non-experimental sampling (observational) design limited our strength of inference. AREDS2, a multi-center Phase III randomized clinical trial, was designed to assess the effects of oral supplementation of high doses of macular xanthophylls (lutein and zeaxanthin) and/or omega-3 LCPUFAs as a treatment for AMD, cataract and moderate vision loss. In addition to this objective, the study provided information on the clinical course, prognosis, and risk factors for development and progression of both AMD and cataract. Other study goals included the evaluation of eliminating beta-carotene and/or reducing zinc in the original AREDS formulation on the progression and development of AMD. AREDS2 also sought to validate the fundus photographic AMD scale developed from AREDS. Participants who completed AREDS2 are invited for follow-up on an annual basis for at least five years from the date of enrollment in this study to collect additional data.

Study Design
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Study Type : Observational
Actual Enrollment : 110 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Age-Related Eye Disease Study (AREDS) and AREDS2 Follow-Up
Actual Study Start Date : June 2, 2008

Resource links provided by the National Library of Medicine


Groups and Cohorts
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Group/Cohort
AREDS participants
Participants who were enrolled in the AREDS or AREDS2 protocol and successfully completed the final AREDS or AREDS2 follow-up visit.


Outcome Measures
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Primary Outcome Measures :
  1. Outcomes assessed will be based on the ongoing ocular examination and historical data that will be obtained at each visit. The visual acuity data and the photographic documentation of the two diseases will be of particular importance. [ Time Frame: 5 years ]
    Data on possible ocular events for both AMD and cataracts and for documentation of any adverse effects associated with the AREDS treatment.


Eligibility Criteria
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Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   50 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Participants who were enrolled in the AREDS or AREDS2 protocol and successfully completed the final AREDS or AREDS2 follow-up visit.
Criteria
  • INCLUSION CRITERIA:

Participants will be eligible if they:

  • Were enrolled in the AREDS or AREDS2 protocol and successfully completed the final AREDS or AREDS2 follow-up visit.
  • Can understand and provide informed consent.

EXCLUSION CRITERIA:

Participants will not be eligible if they:

  • Are under the age of 50.
  • Are not able to return to NIH for examination for the duration of the trial.
  • Have any systemic diseases that compromise the ability to provide adequate ophthalmologic examination.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00594672


Locations
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United States, Maryland
National Institutes of Health Clinical Center
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Eye Institute (NEI)
Investigators
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Principal Investigator: Emily Y Chew, M.D. National Eye Institute (NEI)
More Information
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Additional Information:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: National Eye Institute (NEI)
ClinicalTrials.gov Identifier: NCT00594672    
Other Study ID Numbers: 080043
08-EI-0043
First Posted: January 16, 2008    Key Record Dates
Last Update Posted: May 25, 2023
Last Verified: January 27, 2023
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by National Institutes of Health Clinical Center (CC) ( National Eye Institute (NEI) ):
Cataract
Age-Related Macular Degeneration
Age-Related Macular Degeneration (AMD)
Cataracts
 Natural History
Age Related Macular Degeneration
AMD
Additional relevant MeSH terms:
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Cataract
Macular Degeneration
Eye Diseases
 Lens Diseases
Retinal Degeneration
Retinal Diseases