Age-Related Eye Disease Study (AREDS) Follow-Up
Lykilorð
Útdráttur
Lýsing
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.
Dagsetningar
Síðast staðfest: | 10/08/2020 |
Fyrst lagt fram: | 01/03/2008 |
Áætluð skráning lögð fram: | 01/03/2008 |
Fyrst sent: | 01/15/2008 |
Síðasta uppfærsla lögð fram: | 10/19/2020 |
Síðasta uppfærsla sett upp: | 10/21/2020 |
Raunverulegur upphafsdagur náms: | 06/01/2008 |
Ástand eða sjúkdómur
Stig
Armhópar
Armur | Íhlutun / meðferð |
---|---|
AREDS participants Participants who were enrolled in the AREDS or AREDS2 protocol and successfully completed the final AREDS or AREDS2 follow-up visit. |
Hæfniskröfur
Aldur hæfur til náms | 50 Years Til 50 Years |
Kyn sem eru hæf til náms | All |
Sýnatökuaðferð | Non-Probability Sample |
Tekur við heilbrigðum sjálfboðaliðum | Já |
Viðmið | - 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. |
Útkoma
Aðal niðurstöður ráðstafanir
1. Outcome assessment 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. [5 years]