Purpose

Non-24-hour sleep-wake disorder (Non-24) is a condition experienced primarily by totally blind individuals that results in abnormal night sleep patterns and chronic daytime sleepiness. This is a research protocol to develop a patient registry of subjects who may suffer from Non-24 and who are blind. Subjects participate in the study through a phone survey. This registry will be used to better understand, sleep related problems in blind individuals, including the investigation of a potential treatment, recruitment for future clinical studies, and to provide a forum for raising awareness about Non-24. The survey consists of questions regarding the degree of vision impairment and sleep problems that the subjects may be experiencing.

Condition

Eligibility

Eligible Ages
All ages
Eligible Sex
All
Accepts Healthy Volunteers
No

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.

Study Design

Phase
Study Type
Observational
Observational Model
Case-Only
Time Perspective
Cross-Sectional

Arm Groups

ArmDescriptionAssigned Intervention
Blind with sleep problems Blind individuals with no light perception and with sleep-related problems who may suffer from Non-24
  • Other: Data collection on blindness and sleep problems
    Data related to degree of vision impairment and sleep problems is collected through a phone or web survey
    Other names:
    • Data Collection

Recruiting Locations

Vanda Pharmaceuticals
Washington, District of Columbia 20037
Contact:
Vanda Pharmaceuticals
202-734-3400

More Details

NCT ID
NCT01195558
Status
Recruiting
Sponsor
Vanda Pharmaceuticals

Study Contact

Vanda Pharmaceuticals
(202) 734-3400

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.