- Conditions
- Blindness
- Interventions
- Melatonin
- Biological
- Lead sponsor
- Oregon Health and Science University
- Other
- Eligibility
- 55 Years and older
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2008
- U.S. locations
- 1
- States / cities
- Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced May 22, 2026, 5:15 AM EDT