Light therapy for improving symptoms in Parkinson's disease

Double-blind, Randomized Controlled Trial to Demonstrate Efficacy of Celeste® Specialized Phototherapy in Treating Parkinson's Disease.

Not applicable Interventional PhotoPharmics, Inc. · NCT04453033

This study is testing whether a special light therapy device can help improve movement and daily life for people with Parkinson's disease while they continue their usual treatments.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment300 (estimated)
Ages45 Years and up
SexAll
SponsorPhotoPharmics, Inc. Industry-sponsored
Locations1 site (Rochester, New York)
Trial IDNCT04453033 on ClinicalTrials.gov

What this trial studies

This pivotal study investigates the effectiveness of a specialized light therapy device in enhancing both motor and non-motor functions in patients with Parkinson's disease, in conjunction with their current medical treatments. The study employs a six-month double-blind, randomized controlled design, with participants using the device at home for one hour each evening. Assessments will be conducted through virtual clinic visits at baseline, week 13, and week 26, focusing on quality of life and motor function through established scales. The primary outcome measure is the Parkinson's Disease Questionnaire-39 Summary Index, while secondary endpoints include the Movement Disorders Society-Unified Parkinson's Disease Rating Scale.

Who should consider this trial

Good fit: Ideal candidates are individuals diagnosed with Parkinson's disease who have been responsive to dopaminergic medication and have stable medication regimens.

Not a fit: Patients with atypical Parkinsonian syndromes or those experiencing significant motor fluctuations that could interfere with study participation may not benefit.

Why it matters

Potential benefit: If successful, this therapy could significantly improve the quality of life and functional abilities of patients with Parkinson's disease.

How similar studies have performed: While light therapy has been explored in various contexts, this specific approach for Parkinson's disease is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Diagnosis of Parkinson's disease as determined by the study PI, in keeping with the UK PD Society Brain Bank Criteria for the Diagnosis of PD

Responsiveness to dopaminergic medication, as judged by the rater, and have been using treatment for at least the past 1 year

Relatively good eyesight as attested to by participants (Corrective lenses of at least 20/60)

Stable levodopa and other anti-PD medications for at least 28 days prior to screening -

Exclusion Criteria:

Diagnosis of an atypical Parkinsonian syndrome

Significant OFF state or bothersome dyskinesias that in the judgment of the rater, would interfere with participation in the study.

An anticipated need for a change in dopamine replacement therapy, concomitant medications, OTC/supplements, or other alternative therapies during the participant's involvement in the investigation

History of previous light therapy use for PD

-

Where this trial is running

Rochester, New York

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 Parkinson Disease
Last reviewed 2026-06-09 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.