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Glasses that shine light on postpartum depression

NCT ID NCT04845347

Symptom relief Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 03, 2026 · Updated 4 times

Summary

This study tested a wearable morning light device (Re-Timer) for women with postpartum depression. 95 women wore either bright or dim light glasses for 60 minutes each morning for 5 weeks. Researchers measured changes in depression symptoms, sleep, and body clock timing. The goal was to see if bright light therapy could improve mood and reset the internal clock after childbirth.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
bright light therapy via wearable glasses (Re-Timer)
What this could lead to
If it works, this could offer a simple, drug-free option to ease postpartum depression symptoms at home.
What could go wrong
This is a small, early-stage study with no phase designation. The placebo (dim light) may also improve symptoms, making it hard to prove the bright light is better. Results may not apply to all women with postpartum depression.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

95 people

The number who actually took part.

Started

Jun 2021

Finished

Jul 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * less or equal (≤) to 26 weeks postpartum * meet criteria for current major depressive disorder per the Structured Clinical Interview for Diagnostic (SCID) and Statistical Manual of Mental Disorders version 5 (DSM-V) * not currently receiving treatment for depression (for example, prescription medications or psychotherapy). Exclusion Criteria: * Current diagnosis of Posttraumatic stress disorder (PTSD), obsessive compulsive disorder if the onset is outside of the perinatal period, eating disorder, substance abuse or dependence, lifetime history of mania/hypomania or thought disorder per SCID. * current diagnosis of, or high risk for, sleep-disordered breathing, insomnia disorder, restless leg syndrome, and/or narcolepsy. * retinal pathology or history of eye surgery * current use of photosensitizing medications, * current use of exogenous melatonin or medications that may interfere with the measurement of melatonin (nonsteroidal anti-inflammatory drugs (NSAIDs) if used daily, and beta-blockers) * medical conditions for which bright light therapy is contraindicated (for example, epilepsy/seizures). * nightshift work * currently pregnant

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Conditions

The condition(s) this trial relates to.

Depression major depressive disorder postpartum depression

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Post partum depression

Contacts and locations

Locations

  • University of Michigan

    Ann Arbor, Michigan, 48109, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.