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Light Dose Database

Search for red light therapy studies on specific health conditions:

Science study red light therapy motor function

Carpal Tunnel with Rheumatoid Arthritis Red Light Dose

780 nm, 50 mW/cm^2, 1.5 J/point, 30 s, 5 days/week for 2 weeks decreased pain and increased wrist functionality in ...
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Arthritis red light therapy dose

Geriatric Degenerative Osteoarthritis Red Light Dose

450 s x 2 treatments per point x 2 points TREATMENT 1: 830 nm 1. 830 nm, 11 mW/cm^2 continuous, ...
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Arthritis red light therapy dose

Knee Arthritis Pain and Inflammation Reduction Red Light Dose

808 nm, 100 mw, 7 points each side, 56J total, placebo, exercise + pbm, pbm, exercise placebo. pbm+exercise = pain ...
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Arthritis red light therapy dose

Knee Osteoarthritis Pain Reduction Red Light Dose

905, 875, 640 nm, 3 points on the knee, 7.85 J per point, 23.55 J per session, 2 sessions/week for ...
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Arthritis red light therapy dose

Osteoarthritis Neck Pain Reduction Infrared Light Dose

700-900 nm, 50 mW/cm^2, 15 s, 0.9 J/cm^2, 1 point, 12 sessions resulted in reduced OA neck pain. Reduce neck ...
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Arthritis red light therapy dose

Pain, Flexion, Circumference Knee Osteoarthritis Red Light Dose

830 nm, 10,000 mW/cm^2, 1200 J/cm^2, 120 s, 8 sessions improved pain, flexion, pressure sensitivity, and circumference. Improve knee osteoarthritis ...
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Arthritis red light therapy dose

Painful Knee Osteoarthritis Infrared Light Dose

900-1000 nm, 10 mW/cm^2, 300 s, 3 J/cm^2, 2; 900-1000 nm, 11.2 mW/cm^2, 180 s, 2J/cm^2; knee point targets, reduced ...
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Arthritis red light therapy dose

Prevent Arthritis Joint Degeneration Red Light Dose

808 nm, 50 mW, 42 J, 71.2 J/cm^2, spot size 0.28, combined with stem cell injection, target at knee, prevented ...
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Search the Photobiomodulation Database for studies on health conditions:

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.

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.

Table: Light Dose Parameters






Milliwatts (mW) or Watts (W)

Total Dose Energy

joules (J) = power x time = Watts x seconds


Nanometers (nm)


Hertz (Hz)

Spot Size

Squared Centimeters (cm^2)

Duty Cycle

Percentage of time light source is on per cycle

Power Density

Watts per centimeters squared (W/cm(2) = power / probe size


Joules per Centimeters Squared (J/cm^2) = total energy delivered by the probe size

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