Seeing the World Through Assorted Glasses

Completed · Not applicable · Has a placebo group

Conditions studied: Sleep

In brief

The purpose of the study is to test the use of amber glasses at night as a method to block blue light from the eye, allowing the brain to produce a dim-light melatonin onset. The investigators hypothesize that blue-blocking will produce measurable benefits in subjectively and objectively rated sleep quality and mood as well as salivary melatonin levels during the night.

Key facts

Study ID

NCT02483559

Run by

University of North Carolina, Chapel Hill

People needed

15

Starts

2015-06-01

Expected to finish

2016-05-01

Last updated by the study team

2017-02-08

Who can join

Age: 18 and older, up to 50. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Good physical health
• Proficiency in written and spoken English
• Reported average total sleep time <9 hours (so nights spent in sleep lab will not result in sleep deprivation)

You may not qualify if…

• Taking regular medication affecting sleep and/or mood
• Travel across more than two time zones within the past month
• Smoke > 5 cigarettes per day
• Excessive caffeine use (>2 cups at one time or >500 mg daily)
• No current Axis I Diagnostic and Statistical Manual of Mental Disorders (DSM-5) Disorder
• No current use of street drugs
• No history of sleep disorder/bipolar disorder/psychosis/seizure disorder/chronic medical condition
• Night shift work within the past 2 months

Where it is running

• University of North Carolina — Chapel Hill, North Carolina, United States

Full record on ClinicalTrials.gov

Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.