650 nanometer laser therapy utilizes red light in the electromagnetic spectrum for therapeutic applications. This specific wavelength penetrates human tissue to a depth of 2 to 3 millimeters, making it ideal for photobiomodulation therapy. The red laser light stimulates cellular processes without causing thermal damage, representing a safe and non-invasive treatment approach.
The radial artery runs along the thumb side of the forearm and wrist, positioned superficially beneath the skin. This anatomical location makes it easily accessible for laser treatment without invasive procedures. The artery's proximity to the surface, at just 2 to 3 millimeters depth, allows effective laser penetration while the strong pulse provides clear targeting for treatment application.