Light Dose Database

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This is the EMF Channel database of light therapy study doses. After getting the results, click to view more study details. Only successful studies are included. 99% of the studies here are on humans, not animals. This database is a work in progress. Many thanks to Vlad for his PBM database. When the data here references his work, the detail page includes a link to the PBM spreadsheet.

Arthritis red light therapy dose

Osteoarthritis Neck Pain Reduction Infrared Light Dose

Journal:

The clinical efficacy of low-power laser therapy on pain and function in cervical osteoarthritis.

Wavelength:
Range
Irradiance:
50
Condition:
Arthritis
Outcome:

Reduce neck osteoarthritis pain.

Arthritis red light therapy dose

Pain, Flexion, Circumference Knee Osteoarthritis Red Light Dose

Journal:

The effect of low-level laser in knee osteoarthritis: a double-blind, randomized, placebo-controlled trial.

Wavelength:
830
Irradiance:
10,000
Condition:
Arthritis, Pain
Outcome:

Improve knee osteoarthritis pain, flexion, pressure, sensitivity, and circumference.

Arthritis red light therapy dose

Painful Knee Osteoarthritis Infrared Light Dose

Journal:

Efficacy of different therapy regimes of low‐power laser in painful osteoarthritis of the knee: A double‐blind and randomized‐controlled trial

Wavelength:
Range
Irradiance:
10
Condition:
Arthritis, Pain
Outcome:

Reduce knee osteoarthritis pain.

Arthritis red light therapy dose

Geriatric Degenerative Osteoarthritis Red Light Dose

Journal:

Improvement of Pain and Disability in Elderly Patients with Degenerative Osteoarthritis of the Knee Treated with Narrow‐Band Light Therapy

Wavelength:
633, 830
Irradiance:
830 nm 11 power density C, 122 power density P; 633 nm 8 power density C, 34 power density P
Condition:
Arthritis, Pain
Outcome:

Reduce geriatric degenerative osteoarthritis pain.

Arthritis red light therapy dose

Knee Arthritis Pain and Inflammation Reduction Red Light Dose

Journal:

Photobiomodulation via a Cluster Device Associated With a Physical Exercise Program in the Level of Pain and Muscle Strength in Middle-Aged and Older Women With Knee Osteoarthritis: A Randomized Placebo-Controlled Trial

Wavelength:
808
Irradiance:
100
Condition:
Arthritis, Pain
Outcome:

Reduce knee arthritis pain and inflammation.

Arthritis red light therapy dose

Knee Osteoarthritis Pain Reduction Red Light Dose

Journal:

Incorporation of Photobiomodulation Therapy Into a Therapeutic Exercise Program for Knee Osteoarthritis: A Placebo-Controlled, Randomized, Clinical Trial

Wavelength:
640, 875, 905
Irradiance:
100
Condition:
Arthritis, Pain
Outcome:

Reduce knee osteoarthritis pain.

Arthritis red light therapy dose

Prevent Arthritis Joint Degeneration Red Light Dose

Journal:

Can Photobiomodulation Associated With Implantation of Mesenchymal Adipose-Derived Stem Cells Attenuate the Expression of MMPs and Decrease Degradation of Type II Collagen in an Experimental Model of Osteoarthritis?

Wavelength:
808
Irradiance:
50
Condition:
Arthritis, Pain
Outcome:

Prevent knee arthritis inflammation and degeneration.

Science study red light therapy motor function

Speedier Knee Exercise Recovery Red and Infrared Dose

Journal:

Effect of Light-Emitting Diodes Therapy (LEDT) on Knee Extensor Muscle Fatigue

Wavelength:
660, 850
Irradiance:
10, 30
Condition:
Arthritis, Pain
Outcome:

Reduce post-exercise loss of function.

Science study red light therapy motor function

Carpal Tunnel with Rheumatoid Arthritis Red Light Dose

Journal:

Effect of Low Level Laser Therapy in Rheumatoid Arthritis Patients With Carpal Tunnel Syndrome

Wavelength:
780
Irradiance:
50
Condition:
Arthritis, Carpal Tunnel, Tendonitis
Outcome:

Decrease wrist pain and increase wrist functionality in carpal tunnel patients who have rheumatoid arthritis.

About the EMF Channel Light Dose Database

Many people purchase red light therapy or neuromuscular electrical stimulation devices without knowing optimal doses for the results they want to see. The right dose is especially key to light therapies, which have optimal windows of wavelength and energy delivered. Treatment doses outside of those windows will nullify results or harm the user. I took the results from successful EMF studies when these studies included:

  • Photobiomodulation (Red Light Therapy, Blue Light Therapy, Low Level Light Therapy)
  • Transcutaneous Electromagnetic Nerve Stimulation (TENS)
  • Pulsed Electromagnetic Field (PEMF) Therapy
  • Neuromuscular Electrical Stimulation (NMES)

Many studies do not report exact dose parameters they used. They are therefore not included here, even the study reported a therapeutic result.

Light Dose Parameters
Term
Parameter
Time
Seconds
Power
milliwatts (mW) or Watts (W)
Total Dose Energy
joules (J) = power x time = Watts x seconds
Wavelength
nanometers
Frequency
Hertz (Hz)
Spot Size
cm(2) (centimeters squared)
Duty Cycle
percentage of time light source is on during one cycle
Power Density (or Intensity)
Watts per centimeters squared (W/cm(2) = power / probe size
Energy Density (Fluence)
jules per centimeters square (J/cm(2)) = total energy delivered by the probe size

Source: Turchin, Curtis. Light and Laser Therapy: Clinical Procedures 6th Edition (p. 16)

Image by Thomas-Suisse from Pixabay