Using bright light therapy to improve symptoms of obstructive sleep apnea

Bright Light Therapy for Residual Daytime Symptoms Associated With Obstructive Sleep Apnea

Not applicable Interventional VA Office of Research and Development · NCT05917119

This study is testing if bright light therapy can help people with obstructive sleep apnea feel less sleepy during the day, even when they are using their CPAP machines.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages40 Years to 65 Years
SexAll
SponsorVA Office of Research and Development Federal
Locations1 site (Pittsburgh, Pennsylvania)
Trial IDNCT05917119 on ClinicalTrials.gov

What this trial studies

This study investigates the effects of Bright Light Therapy (BLT) on individuals with obstructive sleep apnea (OSA) who experience persistent daytime sleepiness despite using Continuous Positive Airway Pressure (CPAP). Participants will undergo a crossover design, receiving both active BLT and a sham treatment for four weeks each, allowing for direct comparison of outcomes. The study aims to determine if BLT can enhance sleep quality and reduce daytime sleepiness in this population. The hypothesis is that active treatment will lead to significant improvements in symptoms compared to the sham treatment.

Who should consider this trial

Good fit: Ideal candidates are individuals diagnosed with obstructive sleep apnea who have been using CPAP or BiPAP for at least three months and still experience excessive daytime sleepiness.

Not a fit: Patients with conditions such as narcolepsy, poorly controlled diabetes, or those who have recently traveled across time zones may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce daytime sleepiness and improve quality of life for patients with obstructive sleep apnea.

How similar studies have performed: While the application of bright light therapy in sleep disorders is established, this specific approach for OSA is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Documented diagnosis of OSA
* Currently on CPAP or BiPAP for at least 3 months

  * with documented adherence (defined as wearing CPAP/BiPAP for \>6h/night on at least 75% of nights), and adequate control of sleep apnea, as indicated by an AHI of 10 or less when on CPAP
* Excessive residual daytime sleepiness (Epworth score \> 10)
* If taking alertness promoting medication, the investigators will require that they are on a stable dose for at least one month prior to entering the study and that they refrain from dose changes while participating in the study
* If already prescribed BLT, subjects must not have used it for at least one month prior to participating

Exclusion Criteria:

* Shift work
* Travel across time zones in the past month
* Narcolepsy
* Regular hypnotics use
* Decompensated congestive heart failure (CHF)
* Primary central sleep apnea, needing O2 therapy via nasal cannula
* Poorly controlled diabetes (HgA1c\>8%)
* Active substance use disorder
* Dementia
* Untreated bipolar disorder

  * the investigators will consider individuals with a diagnosis of bipolar disorder who are currently in treatment and stable
* Macular degeneration, recent lasik surgery (within 3 months)
* Legally blind
* Taking medication that will cause photosensitivity to blue-green light spectrum wavelength
* Already using bright light therapy

Where this trial is running

Pittsburgh, Pennsylvania

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.
Conditions Obstructive Sleep ApneaObstructive sleep apneaCPAPResidual daytime sleepinessDepressive symptoms
Last reviewed 2026-06-13 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.