Clinical trials
Light clinical trials
Below are recruiting light clinical trials, each written for real people, not researchers. We’re tracking 278 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06913309Recruiting
Home bright light therapy for teen depression
This study tests whether a bright light therapy device you can use at home can help improve depression symptoms in teenagers aged 13-17. It compares the results of using the light with a non-active placebo device.
Beijing, Beijing MunicipalityAges 13–17 - NCT03822949Recruiting
Bright light exposure during heart surgery for better recovery
This trial tests whether using bright light at the right time during and after heart surgery helps patients recover more comfortably. It focuses on people having a specific type of open-heart surgery and checks certain heart rhythm and safety factors.
Denver, ColoradoAges 18–90 - NCT05016219Recruiting
Light therapy to improve sleep and thinking in early Alzheimer’s
This trial studies rhythmic light therapy to help people with early Alzheimer’s or mild memory problems, especially when sleep is getting worse. If you fit the sleep and vision/medical safety requirements, the study may see whether the therapy improves sleep and thinking-related symptoms.
Menands, New YorkAges 55 years+ - NCT06702241RecruitingPhase 2/Phase 3
Light therapy for newborn jaundice
This trial tests different ways to give light therapy to newborns with jaundice. It compares different approaches to see which is best, and may help parents understand the most effective treatment for their baby.
AalborgAges 1 day–2 weeks - NCT05715411Recruiting
Light therapy for long sleep-onset insomnia
This trial studies whether timed light exposure can help people who have trouble falling asleep. It aims to improve insomnia symptoms by testing a light-based approach while carefully measuring sleep patterns.
StrasbourgAges 30–60 - NCT07347379Enrolling by invitation
Long-term follow-up for people with the light adjustable lens
This study checks how well the light adjustable lens (a special artificial lens used in cataract surgery that can be adjusted after it's placed in the eye) holds up over time in people who already have it.
San Antonio, TexasAges Any age - NCT05107947Recruiting
Dynamic room lighting to improve sleep and daily body rhythm
This study tests whether changing the light in a hospital room can improve sleep and help your body clock work better in older adults. It may be most helpful if sleep problems or irregular daily rhythms are affecting you in the hospital.
MalmöAges 65 years+ - NCT06626334Recruiting
Blue light for pain and inflammation after rib fractures
This trial tests if wearing blue light can reduce pain and inflammation after breaking one or more ribs. It may help you need less pain medicine and recover faster.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT07057063Recruiting
Light therapy for knee pain and swelling
This study tests if light therapy can reduce knee pain and swelling (synovitis) caused by arthritis. If you have long-lasting knee pain and arthritis, this treatment might offer a non-drug option to help you feel better.
ShenzhenAges 40–80 - NCT07753889Recruiting
Light, sleep, and body clock study for adults
This study looks at how your eyes react to light and how that relates to your sleep and daily body rhythms. It may help researchers understand sleep problems and find better ways to treat them.
Boston, MassachusettsAges 18–85 - NCT05712772Recruiting
Study how light affects mood in depressed teens and young adults
This study looks at how different light patterns may change brain and mood responses in people with depressive symptoms. It may help researchers understand why light can affect mood and guide future treatments.
Pittsburgh, PennsylvaniaAges 12–30 - NCT05616819Recruiting
Morning light program to improve mood in some service members
This study tests whether getting morning light exposure can improve mood for service members who currently have mild or more depression symptoms. You’d follow a plan for morning light over about 6 weeks, and the researchers check changes in mood.
Tucson, ArizonaAges 18–60 - NCT05807178Recruiting
Light treatment to stabilize sleep-wake rhythm in ICU delirium
This trial tests whether controlled bright light in the ICU can improve confusion and the sleep-wake rhythm in adults who develop delirium. If it works, it may help patients become more clear-minded sooner while they recover in intensive care.
BerlinAges 18 years+ - NCT03657745Recruiting
40 Hz light and brain training for Alzheimer’s
This trial tests whether a combination of 40 Hz light stimulation and cognitive (thinking) therapy can improve symptoms in people with Alzheimer’s disease. It may help by stimulating the brain and training thinking skills, while carefully checking eye and seizure history.
Miami, FloridaAges 50 years+ - NCT05171894RecruitingPhase 2
Test of lower light dose for port-wine birthmarks
This Phase 2 study tests whether using a lower light dose during a treatment called Hemoporfin PDT can safely shrink port-wine birthmarks (PWB). It aims to find a dose that works well while causing fewer side effects.
Irvine, CaliforniaAges 18–75 - NCT05260177Recruiting
40 Hz light therapy for mild to moderate Alzheimer’s
This study tests whether a non-invasive 40 Hz light therapy system can help people with early Alzheimer’s. You’ll likely use the device at home and wear a small activity monitor, while doing memory and thinking tests.
RoskildeAges 40 years+ - NCT05340881Recruiting
Light exposure program for young survivors of childhood brain tumors
This trial studies whether a structured light-exposure routine can improve symptoms like fatigue and how survivors feel day to day. It is aimed at children and teens who have recovered from a non–high-risk type of brain tumor and have mild to moderate fatigue.
Houston, TexasAges 10–18 - NCT05939453Recruiting
Bright light therapy for Prader-Willi sleepiness
This trial studies whether daily bright light therapy can reduce sleepiness in people with Prader-Willi syndrome. It may help by improving daytime alertness, but you must meet specific sleepiness, eye-safety, and mental health criteria to join.
Brooklyn, New YorkAges 6–88 - NCT05958940Recruiting
Bright light therapy study for depression
This trial studies whether daily bright light therapy can reduce depressive symptoms. It’s for adults with depression (including some with bipolar depression), and you would fill out questionnaires and be screened for safety.
EindhovenAges 18–65 - NCT06065852Recruiting
National registry for rare kidney diseases
This study creates a registry to collect health information from people with rare kidney diseases. It aims to improve understanding and future treatments by tracking patient experiences.
Bristol, South WestAges Any age - NCT06129942Recruiting
Light therapy for Parkinson's disease
This trial tests whether regular light therapy can help people with Parkinson's disease. It is designed for patients whose symptoms are at a moderate stage and whose medication has been stable for a month or more.
Suzhou, JiangsuAges 50–80 - NCT06252571RecruitingPhase 2
Melatonin and light therapy for idiopathic hypersomnia
This trial tests whether taking melatonin at night and using a bright light therapy device in the morning can improve excessive daytime sleepiness in people with idiopathic hypersomnia. It is a double-blind study, meaning neither you nor the doctors will know if you are getting the real treatment or a placebo.
StrasbourgAges 18–40 - NCT06304389Recruiting
Blue light therapy for epilepsy with vagus nerve stimulation
This trial tests if blue light exposure can improve the effects of vagus nerve stimulation (VNS) in people with epilepsy that is hard to control. It also includes some healthy volunteers for comparison. The goal is to find new ways to make VNS work better.
Woluwe-Saint-LambertAges 18–60 - NCT06389968Recruiting
Light therapy for vision after optic neuritis in MS
This study tests whether light stimulation can help improve vision after optic neuritis in people with multiple sclerosis. It may offer a way to support eye recovery without medication.
Munich, BavariaAges 18–60
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Common questions
- Are there clinical trials for light?
- Yes. Clin2 currently lists 278 recruiting light studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a light trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a light trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.