The Role of Macular Pigment Carotenoids in the Pathogenesis and Treatment of Macular Telangiectasia Type 2 (MacTel)
Public ClinicalTrials.gov record NCT01354093. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
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Official title
Utah Center for the Collaborative Study of the Role of the Macular Pigment Carotenoids in the Pathogenesis and Treatment of MacTel
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Macular telangiectasia type 2 ("MacTel Type 2") is an uncommon eye disorder that results in slow vision loss beginning in middle age. The macula is the central part of the retina, which lines the back of the eye like the film of a camera. The macula is responsible for central or reading vision. Telangiectasis refers to dilated, leaky vessels, for example varicose veins in the legs. One of the earliest manifestations of macular telangiectasia type 2 is an acquired reduction and/or redistribution of the macular pigment carotenoids at the foveal center. Currently, the biochemical mechanisms and clinical significance underlying these changes are not known, but it seems likely that better understanding of this phenomenon could lead to new interventions against MacTel. The objectives of this study are to image the maculas of MacTel subjects using two-wavelength autofluorescence imaging and resonance Raman imaging to target the 7-degree radius pigment ring characteristic of macular telangiectasia type 2 in order to gain further insight into the significance of this early clinical sign, and to evaluate whether supplementation with oral zeaxanthin can normalize macular pigment distribution in MacTel subjects
Study identification
- NCT ID
- NCT01354093
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 8 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 50 Years to 85 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 31, 2011
- Primary completion
- Dec 31, 2016
- Completion
- Dec 31, 2016
- Last update posted
- Jun 22, 2017
2011 – 2017
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Moran Eye Center, University of Utah | Salt Lake City | Utah | 84132 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01354093, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 22, 2017 · Synced Sep 11, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01354093 live on ClinicalTrials.gov.