Registry for blind individuals with sleep problems

Development of a Patient Registry of Blind Subjects With Sleep-related Problems

Vanda Pharmaceuticals · NCT01195558

This study is creating a registry for totally blind people with sleep problems to gather information that can help researchers understand and address their sleep issues better.

Quick facts

Study typeObservational
Enrollment10000 (estimated)
SexAll
SponsorVanda Pharmaceuticals (industry)
Locations1 site (Washington D.C., District of Columbia)
Trial IDNCT01195558 on ClinicalTrials.gov

What this trial studies

This observational study aims to create a patient registry for individuals who are totally blind and may experience Non-24-hour sleep-wake disorder. Participants will engage in a phone survey to provide information about their vision impairment and sleep issues. The registry will help researchers understand sleep-related problems in blind individuals and may facilitate future clinical studies and treatment investigations. The data collected will also raise awareness about Non-24 and its impact on this population.

Who should consider this trial

Good fit: Ideal candidates for this study are blind individuals aged 18 and older who experience sleep problems or daytime sleepiness.

Not a fit: Patients who are not blind or do not experience sleep-related issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this registry could lead to improved understanding and management of sleep disorders in blind individuals.

How similar studies have performed: While this approach is focused on a specific population, similar studies have shown success in understanding sleep disorders, indicating potential for valuable insights.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Subjects or legal guardians must be at least 18 years of age to participate in the telephone survey. Parents or legal guardians may represent children from 0 through 17 years who meet the following criteria.
2. Subjects must be blind.
3. Subjects must have some self-described problem with sleep or daytime sleepiness.

Where this trial is running

Washington D.C., District of Columbia

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Sleep-wake Disorder in Blind Individuals, Non-24, N24HSWD, Blindness, Sleep, Wake, Circadian Rhythm, Nap

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.