Clinical Trial of Lutein for Patients With Retinitis Pigmentosa Receiving Vitamin A
Public ClinicalTrials.gov record NCT00346333. 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.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Randomized Clinical Trial for Retinitis Pigmentosa
Study identification
- NCT ID
- NCT00346333
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- National Eye Institute (NEI)
- NIH
- Enrollment
- 240 participants
Conditions and interventions
Conditions
Interventions
- Lutein Drug
- Cornstarch control Dietary Supplement
Drug · Dietary Supplement
Eligibility (public fields only)
- Age range
- 18 Years to 60 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
- Jun 30, 2003
- Primary completion
- Nov 30, 2008
- Completion
- Nov 30, 2008
- Last update posted
- Jan 30, 2014
2003 – 2008
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Berman Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School ,Massachusetts Eye & Ear Infirmary | Boston | Massachusetts | 02114 | — |
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 NCT00346333, 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 Jan 30, 2014 · Synced Jul 24, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00346333 live on ClinicalTrials.gov.