Taking people in ChinaNo phase

Light Therapy for Motor Symptoms and Sleep in Parkinson's Disease

Tests bright light box therapy against a dim light box in people with Parkinson's disease.

Key facts

Who runs it: Second Affiliated Hospital of Soochow University
Where: Suzhou, ChinaSee the site
Trial code: NCT06129942
Registry title: Light Therapy in Parkinson's Disease
Status: Recruiting
People taking part: 50 people, planned
Started: 1 Sept 2021
Planned end: 16 May 2026
Type of study: Interventional, 2 groupsOne group gets a placebo (a dummy treatment), for comparison.
Treatments tested: Bright light box
Dim Light box
Record updated: 12 February 2025

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for people aged 50 to 80 with Parkinson's disease at Hoehn and Yahr stages 2-3, who have been on stable drug treatment. It tests bright light therapy for movement symptoms and sleep problems.

Age: 50 to 80 years
Sex: All sexes can join.
Disease stage: Parkinson's disease diagnosed by the MDS criteria, at Hoehn and Yahr stages 2-3.
Earlier treatment: Must have been on stable drug treatment for at least one month, and agree not to change drugs during the light test and follow-up.

Main reasons for not taking part

Using sleeping pills or stimulating drugs
Using antidepressants, unless the dose has been stable for more than three months
Eye problems such as cataract, glaucoma or blindness
Memory or thinking problems (MMSE < 24)
Uncontrollable hallucinations or mental illness

The registry criteria, word for word

Show all 8 criteriaShow less

Who can take part

According to the criteria of PD diagnosis of the MDS, PD patients were selected as the research object. The clinical symptoms of PD patients were consistent with Hoehn and Yahr stages 2-3
All PD patients have maintained stable drug treatment for at least one month, signed clinical informed consent and agreed not to adjust drugs throughout the light test and follow-up period

Who cannot take part

Using hypnotic or stimulating drugs
Using antidepressants, except stable drugs maintained for more than three months
Visual impairment, such as cataract, glaucoma, blindness, etc
Cognitive impairment (MMSE < 24)
There are uncontrollable hallucinations and mental diseases
There are sleep phase delay / advance syndrome, shift work, jet lag, etc

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

Are you between 50 and 80 years old?

Where in China

Department of Neurology, Second Affiliated Hospital of Soochow UniversitySuzhou, ChinaContact: Chun-Feng Liu, Ph.D, M.D.Taking people

About the trial

What the trial wants to find out

The aim of this randomized controlled trial (RCT) is to clarify the effect of bright light therapy on motor symptoms and sleep disorders in patients with Parkinson's disease.

The 2 groups in the trial

Dim light groupPlacebo, for comparison
treated with the placebo device which operates with one intensity of 300 lux \* 1 month
Treatment: Dim Light box
Bright light groupTreatment being tested
treated with the experimental device which operates with one intensity of 10,000 lux \* 1 month
Treatment: Bright light box