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.

Green Light Therapy wound healing dose

Mouth Ulcer (Wound) Treatment Green Light Dose

Journal:

Efficacy of low-level laser therapy in treatment of recurrent aphthous ulcers – a sham controlled, split mouth follow up study

Wavelength:
532
Irradiance:
Unknown
Condition:
Wound
Outcome:

Researchers treated 30 canker sore patients with 1 session of green light therapy.

They broke the session into four treatment sections.

The 4-part treatment significantly reduced patients’ pain and lesion size.

Treated subjects healed in 3 days on average. Sham subjects healed in 8 days.

 

Red light therapy wound dose

Improved Microcirculation Wound Healing, Reduced Pain Red Light Dose

Journal:

Effects of 780 Nm Diode Laser Irradiation on Blood Microcirculation: Preliminary Findings on Time-Dependent T1-weighted Contrast-Enhanced Magnetic Resonance Imaging (MRI)

Wavelength:
780
Irradiance:
100
Condition:
Wound
Outcome:

Reduce wound pain and increase blood flow.

Red Light Therapy circulation dose

Improve Microcirculation Red Light Dose

Journal:

Immediate Effects of Monochromatic Infrared Energy on Microcirculation in Healthy Subjects

Wavelength:
890
Irradiance:
12
Condition:
Circulation, Diabetes, Wound
Outcome:

Increase capillary blood cell velosity and superficial skin blood flow.

Red light therapy wound dose

Faster Diabetic Wound Healing Red Light Dose

Journal:

The Effect of LED on Blood Microcirculation During Chronic Wound Healing in Diabetic and Non-Diabetic Patients-A Prospective, Double-Blind Randomized Study

Wavelength:
625, 660, 680
Irradiance:
100
Condition:
Diabetes, Wound
Outcome:

Heal chronic wounds in both diabetics and non-diabetics.

Science study Red light therapy skin dose

Strengthen Skin Wound Barrier Red Light Dose

Journal:

Red light-promoted skin barrier recovery: Spatiotemporal evaluation by transepidermal potential

Wavelength:
Range
Irradiance:
40 mW/cm^2
Condition:
Wound
Outcome:

Promoted recovery of wound epidermal barrier.

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